 I feel like depression made me more and more stupid in the last few years. 

Can't concentrate or think deeply about anything. Have difficulty developing an interest in literally anything. My mind doesn't wander in different directions anymore, creating hypothetical scenarios or trying to spot patterns in stuff or solving problems. I have become clumsy and forgetful and my observation skills have severely degraded. I'm not as curious as I used to be and have no eagerness left to learn things. Been failing in college because my brain is literally too slow for all the studying I need to do.

My life feels so empty and stuck. I don't even talk to people anymore because I have nothing to say and socialising is very exhausting. I have no friends left anymore. 

I  got diagnosed and started therapy/medication but couldn't continue because I can't afford it rn(being a college student from a third world country with minimal mental health resources available, and what exists is expensive af). 

I tried improving my sleep, diet and physical activity levels but haven't seen any significant changes so far. I still feel so dull and foggy and fatigued in the head. 

What else can I do? I can't bear living like this anymore.