I own several domains through Gandi.net, a French resistrar that’s inexpensive, is dedicated to protecting privacy, and which does free email redirects.
Although I am creeped out by Google and Yahoomail’s activities, for the last 17 years I’ve paid for Yahoo Mail Plus (or whatever it’s called, now that Verizon owns it), grandfathered in at $20/year (now $34.99/yr, I think) for muiltiple email accounts, temporary deleteable emails, and no ads. (That doesn’t mean they won’t analyze my traffic in order to build a dossier on me, though. Sigh.) I currently utilize 5 email accounts on Yahoo, and I often subscribe to iffy sites with a throwaway account, andif it starts getting spammed I just delete it and nothing sent to that address ever gets to me.
If money were no object I’d probably use Fastmail, which has had an excellent reputation for years, but it’s quite expensive if one wants to send/receive multiple email addresses there. If you only need one address I’d recommend looking at them.
I’d also do some searching on Reddit for discussions about email providers. One good place to start is