Hi @RehanChaudhary
So I had a sample LAS file at my end and as you mentioned earlier nothing shows up when we add it in the map viewer as screen in this screenshot.
However, if you insert a local scene points show up and then if we run the to Las to Raster it works as shown in the following screenshots.
Can you try the same workflow at your end and see if it works.
Additionally, I was thinking if you had access to Drone2Map you could use that as well to generate DTM, DEM.
Hope this helps