Airdrop stopped working on Mac

I have a macbook pro retina early 2015. Always worked perfectly.

I recently updated the OS to Monterey.

After that, airdrop works only while sending. But not receiving.

The only way to make it work (for example sending a picture from iphone to mac) is restarting it: this will make aidrop work for a few minutes.

After that, it will not receive again.

I have seen that a lot of people got this problem and none of them found a solution.

Reset NVRAM, reset network settings, delete bluetooth folders with logs etc.... none of them has worked.

Is there a solution? or this is one of Apple methods to make me buy a new mac?