Yeah there aren't just pointers you can get that'll magically make you a better player. And it's not your team's fault either. That being said, looking at your op.gg it seems like you stopped playing adc, and looks like you stopped playing your best champions to play more meta stuff. At your elo, meta is literally useless. Playing towards a certain meta you have to assume that you're playing the top champions in every role with everything to its full potential, and your teammates and enemies are as well. No offense, but you're very low elo, and chances are you're not playing things perfectly or you'd be much higher, and the same can be said for the people you're playing with.
My advice, stop forcing yourself to play random stuff, and go back to playing jinx for example which you seem to be fairly decent with. Jinx being outside of the meta doesn't matter and you should just play YOUR best, not the best possible assuming perfect play and competitive picks. Outside of that all I can give you is watch your map more, watch higher elo players, cs, which everybody will probably comment already. I sent you a friend request as well if you wanted to add me for any further questions, I can answer anything. Main peaked master like 210 LP before I got banned like half way through last season so I'm fairly knowledgeable about the game, and just picking it back up now. I know my name might turn you off but I won't be toxic to you or anything lol. I enjoy helping people learn the game very much. Good luck!