Mix it up really?
Open questions can be good ? “Do you enjoy your job?” “What’s your relationship history like, have you done lots of dating” “How are you finding C site?” “Do you enjoy living in Y?”
Not just firing them like an interview, obviously give your answers as well, room for silences.
Comment on scenery/what’s around you? And yeh I know it’s boring but lockdown is interesting to discuss as we’re all experiencing it.
It’s really not just your responsibility to carry the convo as well - some people are just incredibly dull/closed/bad conversationalists themselves and end up expecting the other person to entertain them.
It’s not just your job to fill the gaps? If there’s an uncomfortable vibe you don’t have to be the one adjusting to make it less uncomfortable.
I went on a date with a very handsome guy the first one after my exams finished in the summer and conversation didn’t flow - but on reflection I was actually asking loads of questions, I think he was just fairly dull and expecting me to do all the heavy lifting 
In my 20’s I went on a couple of dates with men who commented I was “quiet” which I slightly took to heart.
Looking back they were just being rude and aggressive, I certainly wasn’t being silent - they were not very good at conversation themselves and I think they wanted me (as a woman) to be running around mothering them and organising them and extending the date and yelling “let’s get this fun P.A.R.T.Y started” to make them feel more comfortable.