i think qgis might have the ability to do everything you require, however the learning curve is somewhat steep.
it allows you to import data from various maps, including openstreetmap, NASA and many more.
i believe there are free/open source topographic layers that can be imported or ways to add specific data.
it can draw layers, lines and shapes on top of each other with varying translucency and colors.
it can show non-mercator map projections such as stereographic, othrographic or even more obscure ones like the waterman butterfly or some of the ones from the list at the bottom of this page: http://www.quadibloc.com/maps/mapint.htm
if you are doing this for a fantasy world map and not earth, it might add even more difficulty but i’ve read people on forums claim they could do it, using another program with qgis and on windows only. i don’t recall much else since the windows requirement was a block for me. it’s probably possible to create the shapefile from scratch.
it has the ability to customize aspects of maps and mapped datum in many more ways that i am incapable of properly explaining, describing, using or understanding. i also have cognitive/developmental disorders, so it might be easier for others, however for me, it’s a map creation program i get lost trying to use.
Do you spend a lot of time in the dark? How much natural sunlight do you get?
I ask because I have felt like what you describe. Vitamin D deficiency might be a contributing factor. Supplements might help but the best thing is to spend time outside for 3 hours per week minimum, preferably in a natural setting away from gas powered vehicles.
Start doing something. Anything. Move your body. It can be as simple as walking for 30 minutes a day. You can get your sunlight while you do it. It’s fine if it is cloudy, it is not as good if you are indoors, even if there are windows. Exercise will get your blood moving. The hormones which regulate your mood might be malfunction or waste could be getting built up in your brain and causing depression. Get your heartrate up, let the blood carry waste out.
Does your degree have legs? Is it supposed to carry you around? No, of course not. I think. I don’t actually have a degree. If I had one, I would be taking it to places. Especially places that have a use for it. Are there no jobs where a computer engineering degree is needed near you? These days even small businesses need an IT person. If there are none, start your own. I do not know what starting a business entails in Cambodia but it may be simpler than you realize. Start a computer repair shop. Offer to recover data for regular people, like photos from old hard drives and flash drives or sd cards with testdisk. Do it cheap, give discounts and start with a warning that you might not be able to recover anything or fix their computer and that you are a last resort, when no where else can help or they can’t afford a professional place, so you don’t have to worry about failing. Make a name for yourself.
It’s not too late for a career change. If your country is in the toilet, become a plumber. If it is rapidly becoming worse, find a way to slow it down, work to turn it around in any way you can think of. Become a politician and overthrow the goverment or die trying. At least you might die a hero instead of ending it yourself and being quickly forgotten.
Indeed is trash. Find anything else. Even Fiverr.com or Legiit.com are probably better.
Last advice: Pick a goal. Even something stupid. Work towards it. Do not expect to acheive the goal. It is only the carrot on a stick to lure you to anywhere that is not the place you are now. You might be led to where you are supposed to be along the way.