How to improve in adc?

I always get killed even when im back pls tell me im maining caitlyn

Caitlyn is not an agressive playing. Maintain your distance and be aware of your surroundings.

Every ADR has different play style. Match them with their kits

Train Csing in practice tool,try to play with A auto attack and train kiting with friends on custom.

You can get yourself out of gold justt by having better cs so do that first.

Try to duo with a friend so he can peel for you

If you don't want to rely on your support, you can start to main Ezreal, you can farm with Q from long range and use E to be safe.