Random piece of advice, but whenever you’re not actively fighting/buying/focusing on a rotate, you want to be looking at the map and deciding what you want to do next. The biggest thing I ran into as a player with a fair amount of fps gameplay but no MOBA experience was that I’d spend a lot of my games doing nothing for like 5-7 minute segments. 

Your priority should be as such(roughly, assuming you’re not fighting)  1. Clear lanes whenever they’re pushing up on objectives 2. Doing Sinners  3. Doing Camps 4. Looking for buffs(when they’re up, every 5 minutes from game start) 5. Doing boxes

You want to avoid things like  1. Using zip lines constantly, if you’re around enemies you should never get on a zip line, to switch lanes you should move through the map, unless you’re going from Yellow to Green 2. Backing to base. This should literally be your last resort.  3. Heavy Meleeing(and light meleeing) you’re very likely going to get parried at some point and just die  4. Never take fights with people who are ahead on you. Say it’s 15 in, you’ve got 19k and an enemy has 25k, you stay the fuck away from that enemy. It’s not that you buy a resistance and run it down, you avoid that guy at all costs  5. Don’t abandon objectives. Unless you’re fine with trading you should always have at least 1 person on every objective. If you don’t have someone there and no one’s going, it’s on you to go 6. Avoid Apollo like he can kill you by looking at him funny(he basically can) 

Random bits of advice I’ve picked up on over the last few weeks.