Macbook, iPad, or any (good/better) Windows alternative?

For context, I work as a teacher, and currently have a heavy af gaming laptop, it's kind of nuisance na since I need to carry it often and I can't even play games anymore, sad

So the question, which is a better device for the nature of the job, all of which are (hopefully) lightweight, can handle lots of files, documents, sheets, and especially, I can plug-in to present stuff through TV or a project (IDK if this can be done sa iPad, I hope it can para hindi ako magkascoliosis lol), and somehow versatile rin to edit some pictures, video, etc.

Caveats syempre dito ay yung price, Apple products seem to cost around six times my full monthly salary (ehem, better teacher salary sana, ehem) but for the criteria, it can fit the bill, I'm, however, not much aware sa Windows alternative, kaya ayon, which is which?

Thanks! Love u all