In my city there are literally cuddle groups. But tbh I find that a bit weird. Do you have any friends or family at all? They might be willing to hug you. If not, you can start looking for friends or romantic partners, but it might be a long stretch until you can get proper hugs. You could also get a massage, maybe that helps with feeling physical touch. Or just a regular prostitute. You don't need to fug them, many just talk or cuddle, too. Maybe some group therapies have people who would hug you.
...just a few ideas.
Maybe call Telefonseelsorge and talk to them about it. It's a problem many people have.