1. Don't Make Excuses

2. Don’t Pick Fights With Your Teammates

3. Don’t Try to Be Pro

4.ward always ward

5.Farm,farm and farm

6.Use proper lane positioning

7.Don't take free damage

8.Pick your battles

9.Seize Opportunity When It Knocks

10.Baron Nashor Is Not a Cure-All

For more detail about above points https://levelskip.com/misc/League-of-Legends-10-Tips-to-Help-You-Get-Out-of-Bronze-Tier