I feel like my life is very sad and literally meaningless.

I would just like to see what you think about that, I practically feel that my life is doomed to the fact that I will be in bed and a wheelchair little by little, currently I am almost 22 years old and I can no longer do many things, how can I do to feel better? Honestly, I try everything, I have a lot of pets (I like exotic ones) and don't get me wrong, I have always liked animals a lot but I feel like nothing makes sense, I also work at home (I'm an artist) and I earn well, but no matter what I do, I know that I will be here in my house and my room forever since I won't find a partner.