It's definitely worth a try.
I wouldn't say it helped me, but it didn't make it worse either. I was surprised at how neutral and understanding the people on the other end were regarding suicide. Even if it happened (rarely) that I had to listen to crappy advice (like watching meditation videos or download their app), everyone accepted my decision. Of course, this may depend on the person you talk to and maybe also on the country you live in and it's law. However, before you give up I'd give it a try. Just talking about something can be relieving.