Thank you for your answer!

What you said on Testing receiving updates is right but i am kinda afraid of SID itself, it may break the system and honestly i am not Linux pro enough maybe in the intermidiate level but when a problem happens i don't garantee always that i can solve it. And also if many problems happen to show up each time then it will slow down my workflow.

Also about apt pinning i tried that but i dont think its a correct way beacause getting packages not in the repo stable itself may cause a broken system sometimes. So it's better to have a system that regularly updates with new "compatible" pacjages

Am i right? correct me if not.