Good luck Ali with your job search. Wish i can help you.
Why dont you make new thread in general discussion saying mechanic available and list all your qualities. May be someone needs you. I am not sure how admin here would welcome that, but no harm in trying bro.
Disconnect the connector for evaporator temperature sensor and pull evaporator temperature sensor out of A/C housing and do the opposite to install the evaporator.
Hand brake power cant replace the foot brake as they are manual brake and your foot brake is hydraulic one (100 times more powerful than handbrake).
If you still think its loose and less powerful than before, try getting it adjusted from any mechanic. Behind the rear differential there is adjuster bolt that need to be tighten more.
Oil pan is usually vacuum sealed with gasket nicely stuck with it. Open the top engine oil pouring cap/screw and lower engine oil drain bolt. And then you have to tap a bit from all sides to lower the pan. Make sure you have removed all the screws.....!
Have you check the electrical side of it? Usually these paranormal lol activity happen due to some switch, socket, wiring, sensor, relay or fuse failures.
If yes then simply you have to replace the whole system and i am sure with modulator it will be bomb expensive. Try sourcing in scrap in shj for less.