How do I get better game sense?
Basically my mmr is ~100 more than it should be (around 1750) and everyone else I get matched with in rank is probably at least a little better than me. The thing I noticed is that it doesn't take a lot to get carried easily (esp. if you queue mid/support and always get support, heh), so I get to stay at this mmr (somehow have a 54% w/l) if I don't singlehandedly lose games. The only questions I need to ask myself are "can I go in?" and act accordingly; my teammates are the shotcallers, which means I am terrible at understanding the flow of the game. There are a few specific things I think I'm specifically pretty crappy at, and I want to know how I can practice or get better:
Reading Teamcomps: When I'm in champ select my analysis of team strengths/weaknesses/whether or not it's complete ass is basically limited to "wtf no tank" or "wombo combo" or "good late game". When my teammates talk about our team it's some next level shit and they have a generally have a clear understanding of what kind of win conditions come with our team and know exactly how to play around it. Once I had an Ezreal go "malphite don't bother ulting as many people as possible just ult whenever you see their adc because of our lockdown" and we nearly won from picking off their adc every fight even when our team had a Fizz that went 2/17 lol
What to do after lane phase: Whenever my team is ahead, my first instinct is to group mid/drag and push the fk out of them or get jungle objectives, but I noticed that people actually don't choose to group immediately after lane phase ends and I'm probably overlooking why with my overly-simplified thought process and I want to know why this happens
Any other advice unrelated to what I specifically want is always welcome too