"bestofluck" and "allgoodvibes"

Hi-I’m a newbie today on the forum, so please excuse me if I’m posting in the wrong place or about the wrong subject…
My issue is that I get spam every day from spammers whose addresses begin with "bestofluck@xxxx(random string of alphanumeric characters) OR “allgoodvibes@xxxxx” .
I have tried to use the block list to block them in every possible permutation I can think of, but it seems every time I enter a new block rule, they double the number of spam messages. If anyone has any suggestions, I’d greatly appreciate it.

macOS10.13.6
SpamSieve 2.9.34
Spectrum Cable
macOS Mail App 11.5

It shouldn’t be necessary to create blocklist rules for different permutations. SpamSieve should be learning to catch these automatically without rules. If it’s not, there may be something wrong in the setup or training. Please use the Save Diagnostic Report command in the Help menu and send me the report file, and I’ll take a look.