Vordt of the Boreal Valley? Yeah, he's kind of a jerk and some of his attacks are pretty annoying to deal with if you're new to Souls games.
If you ever want to try again, my best tip for Vordt is to stay right on his ass. The closer you are to his thicc 
, the better your chances to avoid his attacks. Except for the triple charge he does, which you just have to learn the timing for and roll out of the way each time.
I couldn't get into the Souls games at first, but now they're some of my favorite games ever, so I'm always on team try again, it just might click this time. But, of course, for some people it never will and any time spent on these games is time wasted, and worse, time wasted in a miserable manner.
You could also try ds1 or ds2 or Sekiro or Elden Ring, or, if you have a PS4 or PS5, Bloodborne. It's possible one of the other ones will click better for you and once you've completed one all the others tend to become much more approachable.
Yeah, they're tough! I would say that both Sekiro and Bloodborne I found to be a bit kinder to newcomers than ds3. Hard to say whether they'd work better for you, although they might.
Ds3 is the first Souls game I actually beat, so it's definitely a reasonable choice for first Souls game.
I'd for sure suggest starting over, if you got stuck at Vordt, you're not super far in and won't lose much with a restart.
One thing you might want to do is not try to play these things blind. Watch a playthrough on YouTube, watch some challenge runs or speedruns, maybe even read some reddit threads, but keep in mind people on Reddit are idiots and half of what they say isn't going to be true or helpful.
And, feel free, if you like, to DM me if you get stuck, I might have a tip or two, but, well, don't count on that necessarily! I'm not what you'd call "good" at these games, I die in stupid ways to stupid stuff all the time.