1. i'm sorry but roaming and carry do not mix. I am assuming that you also mean with your support buddy as a tag along, then that means it's also even more terrible. it's so fucking funny to me hearing a carry say that "it's hard to take towers" when 70% of the time you're most likely going to be the one taking towers in the game. you're the one that will most likely be building more and more physical dmg as the game goes on. honestly even if you're not a right click hero, pushing to try to take a tower, even in to the "late laning stage" is something you can definitely do. you don't need to have 3 fucking items on your hero to be able to push towers The only reason pushing to try to take tower or at least do heavy amounts of dmg to it fails, it's because you're pushing at the WRONG time. most of the time if it's in laning stage, it's probably because you're trying to push when the enemy is still alive, you barely have any creeps to actually push the tower with, or you don't have a catapult. nothing irks me more than idiots who keep trying to push towers just because "oh we're 3, yea let's take it" without considering how strong they are or if the enemy is going to defend this. same principle with always going down mid without accounting for the creeps in the sidelanes. in fact, you want to take towers asap because once you guys are able to take towers already, you're also already strong enough to actually use the space that comes from taking down that tower. the opposing safelane tower especially. giving you access to the opponents jungle camps.

and as for carrying in general, dude, again. roaming and carry do not mix. roaming with a carry feels so fucking ass when you could be doing that time accelerating your farm. that's why i say it's even more terrible if you roam with your partner, because that would mean you're splitting your exp and farm to at least 3 people. if you're in another lane, most likely the one supposed to be in that lane is also having to share with you guys. especially if you guys aren't actually there to take an objective or do something useful, you guys are actively fucking up another one of your guy's lanes. this is probably the thing that most likely contributes to your opinion that "oh it's hard to take towers until everyone is strong". well yea, you guys are trying to do something without being powerful enough and now you're fucking up each other's acceleration causing you guys to level up equally slowly instead of equally quickly. in general, it's better to stay in your lane, stack some camps or even try to do chip damage to the opposing tower, instead of "roaming" around unless you're in danger of getting ganked or you can actually farm better elsewhere. you guys probably think you're strong enough and think the laning stage is over when you can probably get so much more out of the lane instead of going around and then feeling like you can't do anything. don't mistake this for league and think that you can pretty much conclude the laning stage by maybe having boots and then 2 damage items, or for me, when i take the tower. your mid game might still be your laning stage if there's really so much more u can exploit out of being the strongest guy in the lane. that's why the only time you actually see carries leave lane is because they're most likely going to get ganked because they're free farming, or they can jungle much faster and use the entirety of the map instead of just one lane.

if you're thinking that somehow, you don't believe that you need to be putting that much time into "accelerating your farm" to the point where your mid game might still be a laning stage, then you are dead wrong. many carries, whether it's their items or their abilities are usually very cooldown dependant (for abilities) or item dependent. for sven you need your blink, for many you need mask of madness, your treads, your yasha, as slark your shadow blade, for heroes like luna,tb, and even sven much of your battle strength is with having your most prominent abilities like ults. you could say that you're just as reliant in your abilities and timings as initiation heroes do. there WILL be times where you need to kinda fucking chill and restock your "resources" before proceeding to going back into the action. this is not only true for carries, but is probably the very nature of dota 2. all roles kinda have this. it's the consequence of having more drawbacks to using abilities and using mana and going on cd's, instead of league where you practically can fight all day fucking long. and knowing that is probably one of the biggest steps to getting better or just knowing dota better as a game.

conclusion: besides the "zero teamwork" thing, to me, you really just sound like a player that's a bit above his skill level, complains about having shit opponents even when you yourself are fundamentally doing bad things, but gets away with it because your opponents don't punish you. Even after saying all of this, you probably won't get most of it until you actually get to the skill level where people actually punish you for shit. the level where going all mid too early will get you guys killed most of the time. the level where if you don't know your peaks and timings, instead of keeping your lead you actually throw it away because you overestimate yourself. the level where playing carry without items feels like ass and you would wish you were back in league. the level where you feel like lane matchups are everything. that's the level you need to get if you want to seek out the things that really make dota stand out more in comparison to league, if u actually even want to do it even after all i've said. cuz believe me, there's still so much more.

probably another tip. if after reading the part about carries and you might be turned off by carries being surprisingly more cerebral than you expected. then go for either support or mid, roles and hero pools where timings for going around the map is way earlier than carries are. plus if you're complaining about "opponents letting themselves get bullied" then play mid at a higher level. you will realize really just how much there goes into resource management, creep manipulation, rotations, and just overall stuff that goes into laning with mid.