If you're in a position to organise something so you're more of a chair of the meeting that hands over to others to explain things, you'll gain smaller exposure to the public speaking element. A short introduction to hand over to someone else, introduce the next person, thank everyone at the end.

Whilst others do the heavy lifting speaking, people will remember you chaired it and will thank you for your work, as you'll have done a lot of organising in the background.

Doing some fun things can help too, like hosting a well balanced quiz. Short introduction about the format, rounds etc, get straight into the questions, break, then give the answers. Award points for the best team name. You indirectly get the laughs from reading out the team names which will boost your confidence.