First: @Stal welcome to the forum! 
During those ongoing problems with the kernel vulnerabilities I would not recommend to downgrade the kernel.
Maybe your problem with bluetooth is related to the problem in the following thread:
https://forum.endeavouros.com/t/no-bluetooth-after-kernel-update-7-0-7-arch1-1-64-bit/79669
The solution there is to upgrade to kernel 7.0.8 where bluetooth works again.