My friends left me out of the group project and told me I wasn’t capable enough

So I'm in 12th grade rn and we have this project from our subject AI where we have to make a capstone project in groups of 2–4. Last year in 11th, I made the project with these two girls in my class, let’s call them P and S. We're like a trio in class. Not super deep, but close enough to always sit together, talk, and do things like this together. I don’t really have anyone else in this class. So naturally, I just thought we’d do it together again this year. But turns out, they made the whole project without me. No heads up, no “do you wanna join” nothing. Just went ahead. I only found out because one of them casually brought it up while talking about the project with me like it was no big deal. I didn’t even know how to react. I just stood there surprised trying not to show how much shocked i was after hearing that.

Look now the thing is that they might not be my bestfriends but they are my close friends, we do all the projects together and they both know that I got no other friends in class other than those two, at least not the type who i can work with, everyone in class got their own friend group so ain't no way i will be able to find someone with whom I can work with. the way both of them didn't care to ask me or anything clearly showed they don't want to include me in the project. I later on while going back home asked S in metro if i can join their group if they have not completed the project yet and what she just said literally broke my heart and i was literally about to cry, my eyes did got wet but i holded it in, she said that "the topic of the project is quite hard and she thinks that I won't be able to do it and that it also took time even to her to understand the topic so it will be more harder for me, so it's better if I find someone else and find some other project." that's one of the harshest thing said on my face to me, i still feel like crying whenever i remember it.

And now the whole class has their groups, and I have no one. I’ll have to do this entire project alone. Which would’ve been fine, if I wasn’t also absolutely terrified of the viva presentation we’ll have to do later during the exams. I have really bad anxiety when it comes to speaking in front of people, and now I’ll have to do it all solo while the others have each other to back them up, I don't even know how i will make the project, I'm not the best in these stuff but i will work it out somehow ig but I'm terrified as hell. I just feel so left out and small right now. And I don’t even have the courage to tell them this hurt me, I still sit with them. I don’t even think they realize what they did. Or maybe they do, and they just don't care. I’m just pretending everything’s fine. But it’s not. I feel really alone. i can't believe they could do this to me. Just wanted to share it somewhere. idk what to think of all this.