Blocking junk and spam emails

My Ventura's junk/spam email blocker is tedious and time consuming. After I mark an email as "Blocked" it continues to appear because the sender just changes one digit or letter or symbol and sends it again. Then, my Apple Mail blocker overlooks blocking it because it has changed slightly. So I must block "Camp Jejune" and "Canvas Portrait", .etc. hundreds of times. Is there any third party blocking software that will allow one to block a key word in an address or subject line? To create a new rule, every time the sender changes one letter or number or symbol, is endless and too much work for me. Thank you.