You can help your mother cook. If you find anything unsanitary when cooking, point it out in time and tell her it's not good. A few more times, she will remember, especially if you help her, she will be very happy and she will take your words more seriously.

Buy a cookbook for mom and let her learn to do it, or you can learn it with her, and you will get better gradually.

Don't be angry with your mother. Everyone's mother is different. There are places we appreciate and places we can't tolerate, but maternal love is the same. We should tolerate her, just as she treated us when we were children.