after all it seems like the problem is with the new 8a phone..
i tested the buds with my tablet and it works seamlessly..
on the phone it as lot's of echo problems..
the shop i've bought it at said they are the importer and they can't provide with warranty in case i've grapheneos on the phone..
it pretty depressing to know that i can't use it properly.
early on there was a problem i told you about where the phone didn't work at all..
at least it works now but not the BT functionality..