Sorry to hear that you have issues with your Fuji X-T2. My camera operated reliably until its untimely demise. I’ve never had issues with any of the cameras I’ve owned over the years (mostly Nikon).
The X-T3 is about the same size as the X-T2, with the controls in the same places but with updated specs (megapixels, frame rate, battery life, etc.). I bought the Fuji X-T3 for the same reasons I bought the Fuji X-T2.
Here’s what I wrote in 2018:
My choice of camera is about how I prefer to interact with my camera. This Fujifilm X-T2 is mostly all metal, and it has real, dedicated single-purpose individually marked dials for each of ISO, aperture, shutter speed, exposure compensation and metering mode. It feels great in hand to have a real metal camera with real dials rather than a plastic thingy with one dial. With the controls/knobs being just at my fingertips, the Fujifilm feels “right”. I like the layout of the controls, the retro-styled knobs and such, which allow me to make quick changes without jumping through menus.