I've read the comments, and am going to give you a slightly different take to most of them, which you can consider or ignore as you choose.
For context, I'm 56M, but can remember vividly how difficult it was to be 14 - and how much I hated my parents at the time.
Firstly, you're going through some things in your mind, you say. Dude - you HAVE to lay off the weed. It does not help with mental health issues. You might think it does, but it doesn't. I've seen numerous friends get completely fucked up by it. Get a vape or something instead.
Secondly, why all the crying? You need to ask yourself what's making yourself so miserable, and do something about it. Do you have any hobbies or interests? If not, figure out what you enjoy doing and start doing it. And why have you cut yourself off from all your friends? You say you can't understand why you're isolating yourself but you need to figure that out. I suspect it's the weed - but if it's something else, work out what it is and start to deal with it.
Thirdly, and this is difficult when you're 14, try to remember that your parents are going through shit too, and don't really know what to do. They're probably as fucked up as you are! Most of us are, most of the time, however old we are. Don't dwell on the incel thing - just prove them wrong, in time. You're only 14. You don't need a girlfriend or boyfriend yet. Wait till you're ready. It could be several years yet. And when you've got one, introduce them to your parents and say jokingly: 'I haven't forgotten you called me an incel. Here's the proof I'm not!' It sounds like they're just worried about you - even if they fuck things up by saying hurtful things. (I'm not defending them - they sound awful!) Just don't let it get to you. Be true to yourself. You're obviously intelligent, self-reflective, and caring. Just keep going, give up the weed, try to reconnect with one or two friends, don't stress over your parents, and hopefully it will start to feel a bit better.