An under appreciated part of off road prowess is fitness level and general health.There is definitely a learning curve. But your X I would think is more than capable of fire road and double track. When I brought home my 1190 I hit the gravel on a seasonal road and crashed. For two years I didn’t go on trails thinking it was to big of a bike. This is not true. Depending on what your expectations are.
I watched lots of you tube videos specific to Technique and ADV bikes.
Tried very hard to adapt And follow the tips and tricks given.
This year I started venturing Off-road with a buddy that bought a new 890 adv.
Neither of us have had previous dirt bikes.
I am no expert by any stretch. I am no Chris birch. But in 6 or so rides I can Ride across the Ganny, and Northumberland forests. I can confidently ride the rail trails and seasonal roads. I have learned techniques that make picking the bike up much easier than the first lift. I have only dropped it a couple times.
No damage no injuries. I have fixed a flat trail side.
Note I’m not flying through the forest, my trail speed is but a crawl.
Usually between 10 & 50kph and that’s enough for me.
The sand around here is definitely challenging but I’m getting better.
As I recall you also mountain bike so you're likely in pretty good shape and good general health. I know from experience that being in good shape goes a long way to upping ones general confidence riding off road as well as your actual performance.