I honestly don't have a good answer to this, but wanted to join the chorus saying yup, me too.
The pandemic hasn't helped in that regard either. It's very common to hug people upon seeing them, and I don't even get that anymore.
Seconding J707, having pets helps. In my darkest days post separation, the cats could sense when I was struggling and would come cuddle with me when I was crying alone in bed. They still come sleep with me most of the time, and just the weight of having them on my legs or whatever is nice. It is definitely not the same as human connection though.
One of the things my therapist and I have figured out is that part of why I accepted some of the more abusive aspects of my XH's sex addiction is because of the physical touch aspect that came along with it. Not the actual sex, but the other stuff, like playing with my hair, cuddling, hugging etc. It was never outright communicated as a quid pro quo, but it was very apparent to me that when we had sex, I got more physical affection. Like crazyblindsided, my XH always viewed any form of physical affection as leading to sex, which made everything complicated. A tit for tat that I absolutely despised, and over time made sex feel very transactional and gross. I worry about how I will navigate physical affection in future relationships, because it's definitely something I need, but it has a lot of negative connotations now as well.
I also wonder if anyone else has this specific issue when it comes to touch - I only really like it from my SO, and nobody else. Cuddling/hugging your kids is different, but I mean from adults. Like even if I were to call up one of my guy friends, cuddling with them would absolutely not feel satisfying. In my day to day life I would prefer if nobody touched me at all, and I actually really like the 6 ft personal space bubble that has been created for me out in the world. But with an SO, I am perfectly happy to be physically affectionate as much as possible.
I too have been avoiding companionship until I feel better able to handle my triggers. I just had my 2 year anti-versary on Nov 3rd, and I still don't feel ready. But it's a really weird position to be in, because I crave physical touch, and yet I know I'm going to have very visceral reactions to it. Does anyone else feel like it's a little self-sabotaging to deny yourself physical touch, especially after you've identified it as such an important thing for you?
When I think about dating again, the thought of someone touching me makes me tense up, so I can't really imagine how much worse it might be in real life. It's so weird, because I know I'm not ready for it yet, but the desire is there.
Oh, and one last thing - a weighted blanket has helped! It's definitely not the same, don't get me wrong, but if you think about the science behind it, it's pretty cool. You get an increase of serotonin, oxytocin and dopamine, while also decreasing cortisol. I've found I get a really good, deep sleep with the weighted blanket. However I will warn you that for me, that has also meant an increase in vivid dreams, some of which are more like nightmares - rehashing of some fights, defending my daughters from XH, some pretty gnarly stuff. It's clearly stuff my sub conscious needs to work out, and hasn't been able to because I haven't been getting deep enough sleep, but when I first started using the blanket that was a side effect I wasn't prepared for.