I have seen Latex + Beamer and Reveal-MD recommended by many here. Will check it out. Thanks!
I really wouldn't call that "really easy/fun to use". I think it's only a good option if your presentation is full of complicated equations (e.g. giving a lecture course in a maths heavy subject)
In terms of user friendliness, perhaps.
In terms of making beautiful slides, it’s hard to beat.
For math, sure, latex is the top choice.
I find it easier to make beautiful slides in a tool where I have the ability to place things by hand