Silver is worse than Bronze.
But thats not the point.

Some good tips to get out of bronze, play with more mobile and assassin like champs. (khazix, panth, eve)

Play Akali every game and you will get out

How i got out of bronze was whenever i started a game i muted everyone both teams and made sure i didn't type anything.

I also played a champion i was comfortable with playing which at the time was ahri and annie

Maybe try duoing with a friend you feel comfortable playing with.

This worked for me and may or may not work for you but don't get discouraged just keep playing and you will get out of bronze just try not to get heated and NEVER play when on tipping point!

-Sugi

Focus on CS + Objectives and play for the team, not just for yourself.

Find a good duo partner preferably a top laner since you are a jungler. When you play focus on early ganks, ganks when lanes don't need them and push lanes after a successful gank. Also don't rage in chat at your teammates this is something that i cannot stress enough. Always say GJ and generally be nice to your team after a good fight, most of the time this will encourage them to do there best. And one more thing, when you are in your promos don't tell them this usually leads to trolling and feeding.

Edit 1: make a good champion pool and only play them and get better as them, i only play Nunu, Vi, Olaf, Lee Sin in ranked and playing them has gotten me out of bronze, i'm not saying to play those champs i'm just saying pick your best and play your best.

Source: I got from bronze 5 to silver 5.

Pick one role and 2-3 champions and play the hell out of them until you master them.
Source: GsG Mizu (Challenger buddy)

The best way to get out of bronze is use a single champion, ideally someone tanky yet high damage such as Jax. (I personally play Yasuo top because he is OP as hell.)
Go top lane and farm like hell - Remember that a single kill is worth the same amount of gold as 18CS. If you die against your opponent yet have a much higher CS score, you are still easily in for the fight.
Play safe, secure kills when you know you will be able to win. Don't overextend when you don't have wards.
Don't make stupid decisions - If you think there is a possibility of death, don't do it.

You should aim for objectives rather than kills. You can easily win a game whilst about 30 kills behind if you don't bomb a teamfight and secure the towers.

akali thats all i have to say she got me out of b5 now im s3 also try to play all roles with champs you feel comfortable with. And just like all the other people have said focus on cs and dont overextend