Brego, I was quite touched by the sincerity of your post.

I have never tried dating apps but previously met several potential partners via online dating sites.

I'll echo what Roller Coaster said re Meetup groups. I just joined a local activities group and its been a lifeline. I'm out of the house and being social on my own terms. I've developed a secret romantic interest in a fellow member which is fun. I'd urge you to consider this option if you're able. It's hard to form romantic attachments from your home. Find a local group that do things you find interesting. Pick and choose what to commit to. If you've been out of action romantically, as I have for a long time, it's a positive way to ease back into the social side of things.