You should try getting it onto the Google Play store as I feel it shouldn't be too hard to make it Mobile Friendly
also being able to hold right click to click and drag the map would also help
You can hold middle click and drag to move the camera around as mentioned in the very first tutorial. You can rebind this in the Controls Settings menu (also mentioned in the very first tutorial).
It's probably best to not speculate about what's easy or hard for games that you haven't worked on ;)
Speculation leads to suggestions, which leads to a better game. What your saying to me is that our opinions don't matter and any critique is wrong.
I'm saying that you don't have the technical perspective to offer meaningful technical advice. Telling me that shipping my game on another platform should be easy is not critique.
For actual critique, I think it is important to recognise that unsolicited critique carries the burden of needing to be delivered in a way that the intended recipient can be receptive to, otherwise it's just noise and is a bit rude.
Developing for mobile is much more different from developing for desktops. Project Catalyst that allows iPad apps to be ported to Mac can't do it in reverse, so the only way left is the hard way.