For one thing, you're not bugging people by telling them about your struggles. If they're close to you, they'll want to help, and be glad you told them. And even if they're dealing with their own problems, sometimes that's even more beneficial. There's strong research that shows that helping others can significantly lower depression symptoms.
No offense to your therapist, but that's really not how a therapist is supposed to operate... generally speaking they're A) Supposed to get you to talk about yourself, not talk about themselves and their own hobbies, and B.) Not supposed to tell you what to do/give advice, but instead ask you questions so that you can figure out things about yourself, and then you decide what actions to take. Though also yeah, friends tend to be better for your mental health than a therapist, because they know you better. (And can be more effective at reducing depression symptoms, according to this study) Though therapy can also be really awesome too, if your therapist is good.
I get the feeling, but don't give up on yourself. You've got a lot of life left ahead of you, and you still have no idea what you'll accomplish later on. Back several years ago when I was going through some heavy depression, I never would have thought that later on I'd be helping others with mental struggles, or stopping a close friend from killing himself. Because in the moment, when you'r depressed and everything sucks, you can't see how anything could be different later on. But things do get better, even if that seems impossible. You never know the impact you do have and will have on others, and even right now I can assure you that your family and friends care about you more than you think. Hang in there
Side note bout myself (spoilered cuz this post is alr long)