i have been a few times at different ages for different things. it would help if you can bring someone with you for support for the intake part.

when i was a young teen, it was helpful. i felt like i was in a safe place. there was a routine and also groups, though i wasn't functioning enough to do groups. i mostly just read books or talked to other patients or did puzzles. i had passes at times so could go out with family or friends for an hour or few. it also helped with the staff being kind. some didn't seem to really 'hear' me at times when i needed support, so that was frustrating. it helped to connect to a few of the patients though, but some of them caused me anxiety also.

you also meet with a psychiatrist usually who will go over your symptoms and meds and make adjustments as necessary.

how things go really depends on a few things, how the environment/other patients are, how the staff are towards you, how you respond to things that go on, and how the overall place is. if it's a general psych ward with patients with all different diagnoses, it might just be a stabilization type of ward, so things won't necessarily be geared towards your individual diagnoses compared to a specialized ward where the staff would be trained in specific things (trauma, etc.) and how to appropriately respond to each person's needs.

maybe you can talk to your therapist about it more.

hospitals aren't a place that people 'want' to go usually, but they can be helpful if you are struggling with wanting to end your life. it might not help significantly with other things, but the goal would be to help keep you safe in the mean time.

i hope that you get the support you need.