You absolutely can recover, OP, and many people do.
I had what I think is quite a common experience: fell ill very suddenly after a few days of having a sore throat. I was working ridiculously long hours (I was a workaholic) and was also under a lot of other stress.
I went downhill rapidly and was off work for six months. As well as the weakness and exhaustion, I had lots of weird symptoms, eg confusion, memory loss, altered sense of smell, loss of feeling in my fingers, digestive problems, hypersensitivity to sudden noises, various other odd things that I would have thought were unrelated if I hadn’t only had them while I had ME. Like you, I was single, but friends and family helped out.
When I ran out of sick leave I was feeling a bit better and was allowed to go back to work part-time, working partly from home. At first I felt worse, but not quite bad enough to stop me working, which I managed by doing literally nothing else.
I gradually started regaining strength, and within about the next six months, ie a year after it started, I was working nearly full time, though much less than my previous workaholic hours and still partly WFH. Within three years of it starting I was about 90-95% recovered. I still took things easier than before, and had a few relapses but these didn’t last long.
That was decades ago, and I’d say I recovered fully over the next few years. Best of luck, and don’t give up hope during the low patches.