Junk mail filtering options
I'm fed up with the junk mail filtering but don't know how to adjust it. Increasingly, I spend significant amounts of time moving messages from senders from whom I want to receive mail out of the junk folder into the inbox. In some cases, I've been doing it for months if not years, but there is apparently no way for the mail app to "learn" that these are legitimate senders. And I think that some senders have somehow changed from arriving via the inbox to the junk folder, for reasons unknown. It seems like every day there are more of them, to the point where I suspect that the majority of legitimate mail is now in the junk folder rather than in the inbox. Perhaps in my efforts to address this problem already I've inadvertently changed something that has caused even more of my mail to be diverted.
I 've begun looking at the advanced junk filtering menus and options under mail preferences, but there are multiple choices in several categories, and I have no idea what to check that would allow me to identify what messages are and are not junk. There are choices pertaining to senders (for instance, are they previous recipients, members of a group, etc.), to the messages and their content, to attachments, etc. In general, what should I check that might help distinguish wanted mail from unwanted? Do I need to add every address/sender from who I want to receive mail to my contacts?
MacBook Pro (2020 and later)