07 prius, ac works only sometimes

Hi guys, I'm having a big issue. The previous owner changed the compressor, so it started to.work. I bought the car and as soon as I left the whole thing shut down on the highway at night in rain 6 lanes me in the middle (no lights no power steering brakes nothing). I get few error codes, one P0A93 which is the inverter water pump. I changed the battery, became worse and would shut off. Got a brand new 12v battery yet again, now better. But sometimes the compressor goes on sometimes just turns off and blows unconditionned air. Sometimes I let the car sit off for 20 minutes and ac would turn on after. Sometimes not. I now have 2 12v batteries connected lol and car is functioning better but still. Setting dont matter, auto or not doesn't matter (never use auto, I'm iMiami the setting is always on 69. The red triangle of death is on, sometimes I get the code sometimes it functions normally and goes off without erasing. Just very weird things are happening with the car. I do deliveries at 3 jobs and it's now getting to a point where I'm tired of spending money and not getting the ac problem fixed. Also oxygen sensor code but that really shouldn't have anything to do with this. Any help will be VERY VERY APPRECIATED! P.s. could it still be the battery after having 2 replaced in 2 days? It's some aftermarket crap. It also loses power, and lights flicker. However how can this be the 12v battery fault, it should be able to drive without it even being connected. I tried, it was running same way. No other codes aside from the bones in picture from torque pro. Please advise anything, I lost my job and now working deliveries, very low on money and bad on income which is defendant on the car. Apparently a new code just popped up as I was making a test, its p2238 o2 sensor positive current control circuit. I'm so lost.