I saw one of your comments and I come from a similar situation, this is my first edition and first TTRPG even.

I'll paraphrase something I saw online (I forgot where, I'm sorry) and basically describes my feelings: "D&D 5th Edition requires you to engage in game design."

I'm sure Homebrewing has been part of the hobby since the beginning and I don't want to claim to know this history I was not part of, but as a DM because of the "Rullings, not rules" you have to constantly make calls and, as you go deeper, entire "systems". Not necessarily because I want to add something that "should not" be in D&D but things that are in the books and are just woefully incomplete (most recent example are the Spelljammers)

The DMG, in hindsight, was a bad omen even in the way it's handled. It presents information in a strange order and does not really give many tools.

I mean, if you go after materiais for DMing online when starting out, one of the first things you learn is the overall opinion that the enconter building simply does not work after a point.

And, don't get me wrong, I LOVE DMing and engaging in this way, but it comes to a point you want to play with your friends and not take so much time and it's clear the burden on the DM might be too much.

I like running both homebrew and pre-written and I don't know which is harder. I do not believe in what a lot of people say that older editions you could "run the adventures as you read them" (but it might be my own inexperience) nut as a curiosity I looked through an old AdventurePath for Pathfinder 1e and was shocked at how much easier it would be to DM. I DM'd it and felt much better. I've dabbled in PbtA systems but only as a player, so cannot comment on that.

Anyway, this has become a bit rambly. I like 5e and have Just finished running a small homebrew adventure, but nowadays I kind of dread DMing even though I love it because I've found other systems much more accomodating