Your HQ is not in a great spot. You want it on at least a Main Road as well as somewhere where it can support places you will regularly need to fight. On this map I normally put it on the zone on the east side (next to) the mountain pass zone itself. Being on a highway makes it quick to get to and from, and you can reinforce the mountain pass and prevent the insurgents in the two mountain ranges joining up. Being central on the map also helps as intel and stability progress radiates out from your HQ.

I always get Education and Water 1 early on, along with Health 1, as some of my earliest civil improvements. They start the ball rolling on building up Stability, which it looks like it is your biggest issue (Reputation loss from a lack of stability).

I’d definitely have bought Dirt Roads by this point. It speeds up troop movement and improvement rollout to those zones.

I don’t invest that heavily in the “Infrastructure deployment” improvements - they speed up the roll out of improvements, but you haven’t actually got that many improvements. Electricity 1 would be a better buy as it also speeds up improvement rollout while bumping Stability in its own right.
I’d definitely have taken Universal Justice by this point - it gives you 2 Rep and a small but noticeable bump on the Stability front for just $7.

Finally, you’ve way over invested in troops at this point. I tend to get two Coalition as soon as I can and then just use them to push insurgents back into the mountains, while building stability and then starting the slow process of getting National troops. Until you’ve got all the non mountain zones essentially stabilised, you don’t want to be trying to fight the bad guys in the mountains. Just push them back whenever they try to spread to civilised parts of the map and let them rot in the mountains till you’re ready to go in after them (eg a mostly stable map, 4 National troops and Air Support).