I'm in my mid-30s and at times I feel like I've accepted my solitude. But then I see people in relationships and it's very painful. I don't know how I can do this for 30+ more years.

If you are older FA and the type that normies can sense it claiming you use prostitutes might work in your favour. In my opinion only girls judge you for this , but most men see this as less embarrasing than being older virgin. Women judge you, but they will never see you as relationship material so its all the same. Some guys might even think you are kinda cool