Don’t give up on persimmons based on that experience! They are sweet and delicious when ready to eat!
There are both astringent and non-astringent persimmons and the ones I bought are non-astringent. I let them get riper (oranger) than in my picture, but can still eat them totally firm, although I like them a little better when they start to have just a bit of give. Astringent persimmons (including American persimmons) really need to be fully soft or they are not good to eat. Maybe yours was an astringent type and wasnt ripe or else it just wasn’t ripe or was picked too young.