What worked for me was just getting offline more. If you spend time having little chats and small talk with people in spaces you frequent you build trust. Just showing up and being normal creates so much good will that when someone asks about your socials you can just tell them that you dont use them much. If you are pushed you can give a short spiel about your views on digital privacy and you will come off as very reasonable.
To be fair my circle is very small, but when people online talk to me I quickly move the conversations to signal for privacy reasons. Most people online are very amicable to it in my experience. I even contribute mutual aid through converting my currency to crypto and people are pretty receptive when I explain that I don't want paypal or the other money apps tracking who I paying or giving my identity out.