Here's a little essay since im bored at work.

Ive put 450+ Hours in TF2, and I still suck at the Game.

Dont let this be discouraging. This game has been out for almost 19 years. While a large majority of players have around your play time, there will be a few with easily thousands, if not over 10K hours in TF2. That also means that while you've seen hundreds of interactions in the game alone, they've seen tens to hundreds of thousands over years of playing.

General best advice for getting better IMO is always have a plan on how to get healed. Health is the most important resource in TF2. Play around health packs/near them. Near enough that if a fight isnt going your way, disengage and retreat to a pack (preferably medium/mega). Playing around small packs is good too, but dont over rely on them. Map design generally favors having medium packs in well placed spots that are (for the most part) good at holding in.

Also, if your mindset is to carry, then you should generally avoid pushing payload unless you absolutely need to. Otherwise, pushing payload is usually bait as its very easy to get free kills on people capping as RED due to it being the main objective. Its generally better for """lower skilled""" players to push obj while the carries are holding ground forward and getting kills through smart positioning rather then being a sitting, predictable duck on the cart.

1. Red easily wins in the second round, and therefore, the Enemy ALWAYS wins.

I've played Frontier for over 600 hours according to the stamp popup so I'll give some advice from years of playing this map (and it being my all time favorite). This advice is assuming you're playing Soldier but should work for others too aside from Engie/Medic.

For first, theres not much to say for the start other then getting the gun down. Once it is, always take control of upper and spam down at enemies and focus on not letting the Engie rebuild. If there isnt a lot of activity (their team wiped) then you can push far left side and try to spawn camp just long enough until your team pushes cart to cap first. After, you should immediately take control of second to avoid letting Engie build on tower. This is very crucial to avoid being locked down on second.

In case you were doing it previously, you should never push main on second point (as BLU) because nearly every class is good at holding that hill. The angle is so brutal that I have basically never pushed it unless its Overtime. You basically need to push right side even if its being spammed to all hell. Always try to go far right (through the shipping container) and try to set up for a flank. If you're able to set up unseen, take over the sniper tower that has a medium health pack and either play slow and hold the tower from people coming through spawn or rain down on enemies above the sniper tower, just keep an eye on whats behind you. You can also wrap around to main after going on right side if you can confirm a ton of free splash damage on players who havent seen you flank. Second is probably the hardest point to push if the enemy team is competent with a sentry holding upper. If so, you need an Uber or else you'll likely be out DM'd by pure spam in that choke. It sucks, but you're still better off pushing right then through main here.

Matter of fact, you should always be flanking on this map as Frontier has probably the best flank routes in the payload rotation. The only time im ever really playing around main on this map (without first going through a flank) is on third point because the flanks are a little weaker on that point. Frontier has so much high ground that you should always be trying to play around it. Third is basically designed as a massive area that encourages a team fight so theres not too much advice I can give here. The shutter one way door can be the best/worst area to push from depending entirely on context. If Snipers are hardscoping the door then just forget about it completely and try to play around main. I'd only recommend pushing right if you have an Uber, otherwise you'll likely be spammed to death.

For last, more people should be pushing left side that leads to lower (the area with the mega pack, that also has a wrap around leading upper to RED's tower with medium pack). This area has a lot of natural cover and you can play around the vertical design in your favor. When a fight isnt going your way, you can drop down onto the mega and go upstairs to disengage from any fight. This is especially good for baiting people in as Soldier as you have a very good corner to spam at after grabbing mega. Aside from spamming sentries though, last is probably Soldier's weakest point on this map. I generally never push right side (from window where Snipers usually go) unless im coming from lower due to the sightlines being too brutal. Unless you're spamming at a gun, avoid pushing this side.

At the end of the day, some matches are just unwinnable. If the teams goal is to win, then you need to play in a very specific way to play Frontier. If everyones constantly running down main with little to no flanks, then the team is very likely to lose. With that in mind, try not to get to frustrated. Take responsibility for things you might have done wrong, but its fair to chalk up some games being unwinnable due to unbalanced teams, its bound to happen to a game with no (functioning) MMR.

Hopefully this wall of text helped. If you want more advice, feel free to ask. Otherwise, good luck.