With so many fake studies, and questionable official information out there, is there any real solution for biofilm?

Personally when I used a homemade Baking Soda & Xylitol nasal rinse mix (1 part each added to a positive pressure style neti pot/squeeze bottle), it seems to force far more biofilm out of my sinuses & throat than any other mix I have used.

I wonder if there are any foods, liquids, supplements, etc... that can be used to help keep us healthy & remove the biofilm that bacterial colonies use to shield themselves.

Would love some suggestions from researchers/just listened to grandma individuals who happen to know what really works.

I saw some video shared on here from a guy who claimed to have won in their sovereign citizen (maybe some other definition) claim in courts. They also claimed they had a remedy for it that they would share with people who attended his class. Never could track that claimed remedy down.

Hoping this MAHA question helps more than just myself.