I know exactly how you feel. I've been there and while my stuttering has improved a whole lot throughout the years, I still go through rare occasions where I tense up before and while I'm talking. This makes you more likely to stutter. I started stuttering in middle school and it was very difficult to socialize. Luckily I made friends but stuttering held me back from talking more. My advice is to make a friend, whether it's in person or online. If online, once you get comfortable, try to build up the courage and talk to your new friend. Honestly it helped a lot having a friend who stuttered during the prime years of my stuttering. Before I give you tips on what helped me, I want to share something with you. The good news, where I think most stutters are not aware of is that, there's a decent chance your stutter will improve as you get older. How do I know this? Well I know six people who stutter including me. Three of us, including me, our stutter naturally got vastly better as we got older. Two of them have still shown no signs of improvements. One just started stuttering about two years ago. We all never enrolled in any stuttering programs or anything like that. I said my stuttering naturally got better with time which is true, however I did notice some things that helped. One is taking my time while talking. As you might already know, we stutters have a weird habit of talking fast and this is such a bad thing to do. My second method, it's gonna probably be difficult to explain. As I talk, with every word I say, I make sure I move my lips in a exaggerating way. Kinda like I'm trying to perfect how I say every single word that comes out my mouth. During certain words or during a lot of words, your two upper front teeth are hitting your bottom front teeth. I don't know if this just works for me but it does. Try this while also talking slowly taking your time. These two methods combined helped me the most. Practice it if you like although it may seem weird. Don't lose hope. Your stuttering could vastly improve as you get older.