I stopped using Facebook 10 years ago, but I'm loathed to actually delete my account because every once in a while, a long lost friend or relative contacts me there. It would be a shame to lose touch with people. Ultimately I care about that more than privacy. It's the same with Whatsapp. I've made a concerted effort to convince my immediate family to try XMPP, Delta Chat and Signal, but they just won't install another app unless everyone they know is using it. I find it a bit frustrating, but that's reality. So I have to keep using Whatsapp.
It can work. I used a dating website (pre smartphone) and I just put in a photo of myself sitting at my computer and a list of bands and movies I liked. My wife approved and asked me out on a date.
BYD Seal looks good. I would buy one if I had the choice!