It’s this or Google or Microsoft if you want something PowerPoint-like.

Many recommend to ‘pick a javascript framework’, which just like LaTeX Beamer sounds good if you do your own thing, but not ideal if people expect PowerPoint. Building slides through code is fundamentally different from drag-on-dropping images.

Pick Google or Microsoft or OnlyOffice and use their web version. This keeps your laptop free of non-free software while using the same tools everyone else has.

It’s called a telephone. Kids generally don’t use it anymore.