Unfortunately, when using the AUTO modes, the maximum ISO you can set for your camera is 6400.
https://fujifilm-dsc.com/en/manual/xf10/menu_shooting/shooting_memu1/index.html
Scroll down to the AUTO sections. You can get the higher ISO values by manually setting them.
Decide on your budget, add some more (for all of the things you will think you will need after you get a camera -- in-spite of whether you actually need them or not 😀).
Once you do that, take a look here:
https://fujifilm-x.com/en-us/products/cameras/
One of these will catch your eye. Ditto for the lenses. Check your local camera shop to see if they have some in stock. The various online sellers often have sales on the gear. Once you get a little closer, check back to make sure things are not too far off the mark, so to speak.
