This and the message you posted do make it likely that it's a kernel issue.
So here's my recommendation:
1) Try disabling the MAC randomization and see whether that improves things.
2) If not or it doesn't properly/fully resolve issues, use the reportbug tool/
program to file a bug against the linux-image-5.10.0-11-amd64.
That will itself generate various info about your system, but if there's info
that you posted to this list that isn't automatically included in the bug
report, then do add it manually (by copy-paste f.e.).
That way all the relevant information is present in that (one) bug report and
other/outside people don't have to be aware that you also send a separate msg.
Thanks Diederik for your guidance. I will do as you suggested.