How to get out of silver?

Pick a small pool of champions, not mechanically complicated.
Best idea would be to play jungle / top and learn champions that works both lanes.
Don't be afraid to try risky plays.
Don't press yes to surrender votes. (this is situational, as long as you need to know what fights to pick you need to know what fights can't be won. but i had and seen comebacks from 12hp nexus).
You can also try playing a single champ (OTP).

A good example is Pantheon that works both jungle and lane, can snowball, has decent mid to lategame in terms of decision-making / macro.
Is a guy that hit challenger and rank 1 in 3 seasons only playing it.
Using the ultimate for ganks is very efficient , especially with a duo that can time a CC ability to make sure you hit him with the ult.

If playing duo don't go on the same lane (BOTLANE) , one mistake from one of you can cost both your chance to do something.

Watch yt tutorials, it helped me very much. I leveled 6 ranks after that in less than 3 weeks. If you try it ofcourse.

Tip is simple as fuck - just play like a gold player and for sure you will advance soon.

The biggest tip is not to feed. Play passive, silver is full of idiots, you just have to wait for them to make a mistake. Also, look at the minimap, and don't do risky movements.

just play better and i recommend u watch streamers and learn from the better and play more

play safe, mute the enemy team chat (if your team doesnt stfu mute them too), dont steal your adc minions and if youre not support - try to get as many minions. think what you want to do, understand the consequences.

try the blitz app it's really helpful it gives u full info about how to play and ur team/ enemies

Just get better xD

Dont Spam! Help Teammates! Be Friendly!
Play Easy Champs you can handle!
Play Important Lane like Jungle or Top so you can carry.
Try to get a good teammate. (dont play together in one lane!)

Mute all , don't flame , and especially don't think you are good and you lose because of team , if you are stuck in silver there is a reason , start to admit your fault and fails in game and improve them also focus on cs farm and never chase kills if there is a high risk of failling , also the vision plays a good role but not at this elo yet .

just play your main role with ur main champ, dont tilt and lets go dude
u cna play with a good friend too