You need to look into medical treatment to see if it’s right for you. Read up on the “big 3” which is finasteride, topical minoxidil, and ketoconazole shampoo. These are the three treatments that have the most proof of stopping/reversing hair loss.
make sure your scalp is in a healthy, non inflamed, non flaky state.
try and reduce as much stress as you can and not focus too much on hair loss, it can really become an addiction if you let it.
good luck