Maybe a relationship will just come to you and maybe it won’t. A lot of the advice you get in these kind of threads is like ‘just be yourself’ or ‘don’t be desperate’ or ‘be comfortable on your own’ or whatever. None of that ever worked for me. I was never able to just be myself or be on my own without feeling lonely and desperate and that made me seem weird and off-putting to potential partners. Honestly it took recognizing my mental issues, getting serious about finding a solution to them, and working on them for a while before I was able to act like a normal human around someone I was attracted to. In the end what worked for me was a combination of Buddhist meditation and some kind of therapy. But everyone is different. YMMV.
On the other hand maybe you are perfectly comfortable in yourself, are handsome and charming, and have no trouble talking with women, but you just met some women with issues of their own. If so, just try to get out more and meet more people. In that case it’s a numbers game and eventually you’ll find the right one.
You seem to be arguing that FDR was a leftist because of the policies he implemented. But I think what you are missing is why he implemented those policies. I think the truth is he didn’t really have the public interest at heart. His agenda was to contain a growing threat to capitalism in the form of the Communist Party of the 1930s. His strategy to contain the CP was to neuter the party by bringing it into the Democratic party fold, alienating their most militant members, and slowly squashing their agenda. Of course he had to appeal to their interests to do so. But it was a temporary strategy, not a real shift in US policy. There are a few articles on the topic if you are genuinely interested. Here’s one. And here’s a quote from another.