I'm 28, virgin, also short, don't know if I'm ugly that for others to decide ig but I'm no Henry Cavill, shy, anxious, introverted(mostly), and well...a member on a forum that discuss suicide lol, although not cus of this. Saying this so you just know that I'm not like some super good looking dude who is lecturing you on something I have no idea about.
First, I want to say that body image is a struggle, like, I struggle with it a lot, but more for cus I want to be like other men than me hating it cus women prefer talker guys or something.
And this isn't true for men only btw, if you spend enough time here you will see that many women are also struggling with body image, with loneliness, with feeling attractive...etc.
Now, unless you feel that you're "entitled" to have a woman in your life then you're not an incel, at least from what I understand and the opinion I currently hold.
Also, just know this, there are as many lonely women as there are lonely men, and finding love is difficult for the majority of people, including many good looking people, so good looks alone won't guarantee things.
Will having had great looks helped you a ton? Absolutely, saying otherwise is a lie, physical attraction is important for many people. However, other things matter too.
If for example your life isn't in order, then that one thing to fix. Introverted? That alone can kill your chances even if you're good looking, so some social interaction is crucial and absolutely necessary. Developing confidence is important, but confidence doesn't come out of nowhere, it needs to be supported by something, perhaps career success, or being skilled in different hobbies and basically having "interesting" stuff going for you. If you're struggling mentally then addressing that is also necessary.
This is not only true for you just cus you happen to be a guy, but also true for women too. A sustainable loving relationship requires both parties to invest in themselves before trying to build a relationship, unless you want a relationship with no love and one that is full of drama.
If you're young then don't despair, loneliness is painful ofc, but try not to focus solely on that if you can help improve other areas of life.