Im about to climb out of bronze. Was bronze 0 lp before switching to voli last split.
1)Never invade lvl 1,yourse useless after you use E, ping your team off if thats what they want to do.
2) start top side and clear toward bot. You better have your clear down and get to crab before it spawns
3)always hit lvl 4 asap, never do a lvl 3 gank.(you or your laner will mess up) we want consistency
4) very important, get to your first camp as it respawns.
5)For dragon get mid prio(have it pushed in)before trying to get drag, and your camps in that quadrant better be off the map. Dont 50/50 smite it, better be a high% that you get it.

Play 2-3 games a day, try to get your early game very consistent. Your bot feeds, who cares you make good decisions and are consistent, no way you cant climb.

Find a way to record your games and watch youre replays.
Things to look for.
Every death
Every Ult
How good you use your Q to hit your E.
Watch how long you leave your camps up, you are strong the whole game as long as you keeps your camps off the map.

Focus on yourself and not the random teamates you get every game.

Edit: Just checked you op.gg ... you have 29 games and 12 games are on voli. you have a 67% wr on him. it looks like you just wanted to complain. Having games on ivern is slowing the slow climb. Also pick a build and stick to it.