Thanks, I'll then just keep on trying.
Meanwhile, can you tell me if I've done something wrong?
I've tried following first two best answers but none of them worked again, and now I'm concerned if this rtbh done something that I'm unaware of since I don't like modifying kernel and stuff related to kernel. Also, Bluetooth status is now dead(inactive) and before was up and running, how can I revert that and this command if it's necessary?
Once again, I really appericiate your help and time and I apologize for my lack of knowledge.