Thanks Esri Grid it works!
Here are the commands I use but they don't work
and it
Here is the set of data format extensions I want to use
When I drag the raster into the software it doesn't work either.
I tried importing with geoprocessing import grid here's the result
it is DEM "Digital elevation model" format.
The DTM file I'm opening won't load in SAGA GIS for Grid and DTM formats. Please help