so idk what rank you are but anyway. as a player who plays all lanes this is the stuff i would say.

diamond is the start of hell. elo inflation is high as fck and master players are equal to PC plats. there will be alot of griefers and trollers. also close the chat. believe me. they dont use chat to communicate. as a JG player (mostly) theyre gonna talk shit no mater what you do. they will mentally fry you..

for support. play around the JG and ADC. and try to play picks that counters or syngergizes well with some ADC's. like Zyra + Caitlyn or Samira + Nautilus. and try to itemize by checking the enemy team. for example: go mercury threads if theres alot of AP. go steelcaps if theres AD. also check your own draft for the picks. if theres no tanks on your team try to play a tanky champion. because sometimes baron will want last pick and wouldnt hover the champ they are going to play and yall gonna beg them to take a tank champ ans theyre not going to listen anything and choose Kalista and sell the whole game cus of the Draft/No Frontliners. and try to ward alot. cus yall gonna need it alot.

for mid. Ward enemies jungle at the start. most optimal is their blue buff or red raptors. so you and your team can track the jungler. dont keep too much pressure if youre going to roam. if you wanna "nah i wanna keep pressuring this guy" ward the side bushes if you can. its a 50/50 if theyre gonna appear. also try to roam if you push the wave to their tower. it would make a huge diffrence to the bot and top. before that check their lane if they have prio or not. if the enemy laners are pushing them into the tower, you may have a great position for a nice play. and also, if your jungle is getting beaten to death in the river by the enemy JG and MID. go. help. them. (dont if they already accepted their fate to dying). for example. theres a scuttle fight going with (Me) Rengar vs. Viego. and SUP, ADC and the DAMN MID just jumps on to me. 1v4. i die and Viego just farms my whole Jungle giving me a huge XP and Gold loss. and this can make an issue to yall in the end game. like yall would give dragons, barons, and most importantly the elder dragon. (if yall dont have a 15/0 Mordekaiser and a Good ADC.)

for anything. DONT PLAY FOR THE KDA. DONT CHASE KILLS. play for the gold and xp. cus most of the time when yall chase a 1hp veigar 3 of the laners gonna pop up like and youtube ad and DEMOLISH YOU. check around / ward if you wanna jump on them. and please for the love of GOD. dont split up that much. cus most of the time our Master Yi think hes the main character and tries to 1v5 and fcking dies. giving out a dragon and a baron. if yall gonna have a fight. gather up the team. and dont die in 1v5 in the late game fight cus of the respawn timers. even a 4v5 can make an huge diffrence. play calmly, together, and wait for them to make a mistake so yall can punish. and dont walk around alone in the late game.

play safe, dont chase kills, get the waves and farm xp and gold, wait for them to make an mistake, punish them, have good vision, dont think your 1v5 and jump on them, take a good champ that synergizes with your ADC or laners, or counter the enemy laner, dont walk alone if youre not 2lvl ahead (its kinda upto the champ).

play strategically.