Likewise, I thought I was bad at public speaking and avoided it almost entirely until my last couple years of university. By then I found myself surrounded by friendly, curious peers who were happy for me to nerd about whatever it was I became a semi-expert on. That confidence served me well once I needed to lead/train a team at work.

Doing a presentation on Zoom seems kind of pointless as you lose the connection to the audience. I'd rather just assign a pre-record to watch and do a live Q&A later on. More like a Lecture+Tutorial format.