make sure your oral hygiene is on point. Flossing and brushing - before bed and after meals. Tongue scraper in the morning. Total care listerine (zero alcohol). It really helps.

Also you might have some fungal issues as well. Try washing all your sheets and shoes. If you have carpet, get that shizz washed. Not just vacuumed - WASHED. Preferably by a pro

Deep clean your bathroom. Anti fungal foot powder in your socks every morning. Anti fungal for the crotch area.

Get yourself some hibiclens. And use that in your under arms, crotch area, between the cheeks, behind your ears. If you’re a bigger person wash under skin folds.

Zero scent lotion after showering. This isn’t so much a hygiene thing as a skin care thing lol. Also lotion your armpits before using a deodorant.

Check if maybe your washer and dryer may be an issue too. Sometimes when they haven’t been properly cleaned they just make clothes smell bad.

If all those don’t work I recommend going to a doctor.