I'd suggest you sell your copy of Skyrim.
This. Not normally one to suggest it, but it sounds like this game really isn't your thing.
That said, roleplay
yourself. A lot harder not to be attached to. Do what
you would do, use the weapons
you would use. If you wouldn't be swinging a Daedric Greatsword in real life (assuming they existed, you were a capable swordsman, yada yada yada), don't in the game.Don't do anything you wouldn't actually do. Part of a freeform RPG like Skyrim is that if you aren't in it for [censored] and giggles, since the developers by necessity have not closed many paths to you, you have to close your own paths; Don't do everything. Make some taboos and follow them, so you force yourself down one story based on the virtual landscape, like damming a river so it runs down a certain series of crevasses.
When/if you feel like you have the hang of applying these limitations, THEN make a new character, or up to three (that being the maximum for engrossing play I'd recommend at a time), that are as nice-looking as you can make them and have their own distinct personalities and limitations.
One last thing. You don't think about your actions much in modern life where everything is about talking to people and most of life is handled online or via phone, so that often the people you're talking to you can't even see (for example, right now, I am communicating to you entirely by words and a tiny picture of a pretty virtual gal, which tells you pretty much what I am saying and that I can make pretty virtual gals, and not, say, what I am wearing, what I look like, what my facial expressions are, how old I am, how I sit or what I am doing). However, in the real world, that thing people always seem to forget about (including especially the people that, cynically or otherwise, like to point out they're in it, often by way of pointing out their desk job where they also never interact with anything but papers and a computer), your actions speak FAR louder than your words. Skyrim simulates a real world. Not
the real world, mind you, where magic isn't a thing and we live on earth, but
a real world, one where things happen and you fight for survival and you face people and your actions are a point of public display. Hence, dialogue
isn't that important. Rather,
doing what your character would do rather than
saying it is the focus of a roleplay here.
Just a couple of thoughts.
EDIT: And if you don't like the combat, play a noncombat character. If you also don't like stealth (which I sort of understand, though I've not got high opinions of the games you said you DO like stealth in, the Thief series pretty much nailed stealth and most games do it poorly), use illusion. It is entirely possible to calm pretty much everything in the game (provided it doesn't resist magic), meaning you can seriously level up with the skills you DO use and never have to fight anything but animals early in the game if you don't want to (for pelts, so you can start working on smithing for money to buy spells, then illusion your way through the game from the start). Just stay away from undead and machines until you get the Master of the Mind perk.