I came from tube amps and 4x12 cabinet. And when I started with modelling I had the same. It was for me quite a journey and only lately I got used to working with FRFR and studio monitors. I needed some time to get used to IR's and I could never get used to the once I tried or the presets from others. Besides that the AMP IN THE ROOM that guitarists are so used to can NOT be met by the FRFR solution using IR's. There is NO amp in the room IR. There are some IR's to be found that use a mix of settings and IR's and they call it FULL SPECTRUM but still it will be a MIC-ed CAB. Also FRFR behaves different (directional sound).
If you want the amp in the room sound and you do not like FRFR then choice the way to have you axe fx with only a poweramp (solid or tube) and have it connected directly to your cab. Of course you will miss the benefit of cabmodelling and going directly FOH, but even that can be done.
Many people use CABS for stage and still go FRFR to FOH. But you can also bypass that part and have you cab mic-ed.
Then there is the FRFR speaker itself: they will color the sound. Look at the Headrush Flatten The Curve subject. You can make the headrush sound great for on stage, but then the FOH could be awfull and visa versa. Same with Studio Monitors. I made great sound back home without testing it on high volume and it SUCKED in the rehearsal room.
So maybe you should just start with a REAL guitar cabinet without IR's first. And in the meantime have the journey finding your FRFR solution that YOU (your ears and fingers) like.
Good Luck!
EDIT: this would be a full spectrum IR example. But it's still not a full amp in the room. But maybe more to your liking...
PS: I should define the source of the IR, but I really do not know where I got it from.
Have downloaded so many IR's last 6 years