What are you supposed to do when you want to tell people about the abuse, but you feel/know you won't be believed?

I am diagnosed with schizophrenia so people tend to listen to me for a moment, then dismiss me because they feel i am just delusional or that i hallucinated the abuse

It makes me feel a little less like sharing with other people when that happens I want to be able to talk about it openly someday without being scared or getting anxious but apparently I don't think that will ever happen