The best way I've found to make friendships is to be part of a club or organization, doing things together. Eventually, you build up a shared history, and can naturally move to friendship from there. I love going to gaming groups, to play board games, because a) it gives you something fun to do with rules so you know what to do, and b) there are usually some extremely socially awkward people, so you look normal by comparison. Now that everyone in our area has gotten vaccinated, groups are starting to meet again.