I'm a 58 year old disabled guy, I lost my right leg in a motorbike accident over 33 years ago, I went through a very short, "why me and how can I find a girlfriend when I only have one leg". I went about on crutches for 6 months, until I could get my first artificial leg, this was because of the damage to the remaining limb healing slowly. I had no therapy or physiotherapy and because of my attitude to becoming an amputee, I was asked to attend a few clinics, to do motivational speaking for newly affected amputees.
I didn't have a GF at the time of my accident, but as time went on, I got back into dating and the days when I couldn't wear my leg or had shorts on and my leg was in full view, it didn't seem to make any difference to the female I was with.
One day, I was at the clinic and about to do my thing, a nurse wheeled in a beautiful tall and blonde girl, she was stunning, everyone in the room looked at her, at this she burst into tears, she'd lost her right leg above the knee only a few weeks earlier and had been very very low. I asked the room if I could be excused to spend a little while with her. We went to one side, I talked to her and managed to get her to lift her head up and convince herself she was no different to anyone else. I mentioned that I'd gone through the same thing, "what can I do on one leg, men won't find me attractive anymore, I'm no use to anyone" kind of thing. In less than 25 minutes, she was back in the room with the rest of the team and engaging in all conversations. After a couple of months, she had her first leg and in no time was out an about, walking with crutches, then sticks, down to one stick and eventually, none, I still see her on occasion and some days she uses a stick, but so what, it's not a decoration, it's a method of helping you to get around. She's been married for 20 years, has a gem of a husband and 2 great kids, what does that tell you?
I found a woman whom I thought was the bees knees and we were in love and happy for a long time, we have two great kids, but she changed into a money spending monster, the relationship eventually failed and we parted. I now live alone, but have a lovely girlfriend, she was born in America, moved back to the UK with her mother at 6 months old, she's an ex model, worked all over the world and is gorgeous. She worships me, as much as I do her, we get on fantastically and nothing stops us from having a great life both in and out of the bedroom.
Don't think you are useless and no good to anyone, you need to be useful and good to yourself first.
If someone asks me if I only have 1 leg, I say "no, I have three, my spare one is at home, but some days, I like to go out on a limb", I then walk away, leaving them with a puzzled look on their faces, you can have a laugh and will do.
Never give up.