New to Therapy: Seeking Advice on Sharing Personal Problems

I'm new to this app, I actually found it scrolling through my Instagram stories, lol, I'm still a little nervous to put my true feelings out there. Therapy is an option for me but I find it extremely stressful to actually go to appointments... Even if someone is trained to listen, I always feel as if my personal problems are a burden to others. I typically bottle everything up to the best of my ability (it's horrible to do I know) but I don't want my friends to feel like I expect them to be therapists- I'm honestly unsure what to do. Honestly any advice would be extremely helpful! Thank you for your time. 💞