@zuhairhussein Okay, that's what we needed to know; if it's the touchscreen not working then pictures probably won't help anyway. The iFixit site doesn't allow for pictures within comments anyway, so if you want to add them you usually edit your question to add them.
[guide|21499|Adding images to an existing question - iFixit Repair Guide|new_window=true]
Anyway, you should try the things @adr_daniel suggested, but my personal opinion is that you're going to need a new screen. Unfortunately modern phones all have the digitizer or touch screen bonded to the display so it's not feasible to just replace one or the other; you'll need to replace the entire display assembly. Here are the instructions you'll need to do the job yourself.
[guide|113862|iPhone XS Screen Replacement - iFixit Repair Guide|new_window=true]
You can support iFixit's repair efforts by purchasing your screen directly from them; you'll get a high quality screen with a lifetime warranty if you do. Otherwise, they're readily available on sites like Amazon, eBay and AliExpress. The original screen is called a soft OLED but you can also get cheaper replacements called a hard OLED, which is printed on glass rather than flexible plastic so it doesn't go completely to the edge of the front glass and may be a little thicker. The cheapest option is to get an LCD replacement, but it'll be thicker and will use more power since it has to drive a backlight. Prices have come down sufficiently that the soft OLED displays are now affordable.