Something I did that worked for me, but will depend a bit on you/the team.
A couple of times I’d start a teams/meet/whatever call when I was grabbing a coffee, dump the link in the team/company slack and say “Having a coffee if anyone else fancies it?”.
People dropped in just to say “hi”, or to see who else turned up, or just out of curiosity. Ended up having a few good chats, and getting other people talking to each other that wouldn’t normally. I appreciate not everyone can force themselves to be that outgoing though.
In general, make reasons to speak with people, and even if it _could_ be a quick slack/teams message, ask if they have 5 mins for a chat about X and make it a video call. Ask everyone you speak to who they think is the important person for you to speak to.