Buy wards and upgrade trinkets, support players can have at max 4 wards up - 3 from sightstone and 1 pink.. If you spend ONLY 75 gold for a pink ward you will help your team and yourself a lot, if you place it in deffensive position early.
When you win a teamfight - push towers or rush baron/dragon, never go back. A big mistake I see bronze/silver/gold players do, is when they win teamfight they all back up and don't pressure map.
Play only 1 role and be good with it.
One tricking is a faster way to climb, but that won't make you a great player , just great 'insert champion name' player.
Stop tower diving.
Stop copying Op.gg or mobafire, just buy items depending on the situation or enemy team. Think smart which items will help. If you play against a heavy auto attack team - tabis. If you play against heavy cc team - mercurys , if you dominate lane - buy agressive, if you lose lane or are equal - buy deffensive.
Stop fighting enemies who just killed you ! If you died at mid in 1v1 and gave 1st blood or something , when you get back to lane, farm up a bit, don't start a fight again, because enemy will have item power spike with the more gold and he will just win the trade again.
This is a bit more advanced , but learn when to dodge games. If your whole team gets counterpicked in champ select, or they have insane team synergy and wombo combo or you have 0 engage or 0 just bad teamcomp overall - sometimes is better to dodge.
Look at respawn timers !! PLEASE DO it ! So many times we win fights, but my team overstays with low hp, enemies respawn and they die.. Press Tab, see when they will respawn and calculate if you have time for 1 tower or 2.
Stop tower diving !
Look at minimap ult icons ! Its such a noob mistake, engaging in a fight and dying saying "Oh , I thought you had ult Lulu/Soraka/Sona or w/e.. Look at what your team build as items, look at their ult timers and decide if it's worth it to engage.
Trade ! In lane, always trade, never run away letting yourself be hitted for free.
Learn matchups. Study them. If it is a bad matchup, build defense and play passively, wait for jungler or laner.
DO NOT TOWER DIVE !
For silver/bronze players - train farming. Go in a custom game and train to farm with your mains. Learn that melee creeps need 2 tower shots to get them and caster creeps need 1 auto and tower shot to get it.. Try to last hit properly and farm. Always look at map and see which lane has waves and are not covered, go to the lane and get the farm - even if you are a support player, sometimes is better to push a lane, so that your creeps can advance.
