hi, long story short, i suspect the conjob of a mechanic didn't do his job too well whilst replacing my ATF in my 92 wira, there are traces of red fluid on my driveway which i heavily suspect its the ATF, any idea on how to check?

i just changed my fluid few months back to be exact in KL, which my f***ing idiotic uncle still proceed with ATF changing although i specifically told him no, the driving experience was very sluggish, very unlike the last time i changed, i was able to drive back home, but when i was going out just now, the transmission refuses to change, even at 3.5k rpm, usually changed around 2-3k. I quickly drove back my house with 2.5k rpm as i knew something was not right.

So first, i would like to ask how to check the ATF level in wira?
and second, in the event my g/b eventually breaks down because of this shit, how much does one cost? cause i am seriously thinking of claiming liability from my uncle and or from the shit mechanic he "heavily" recommended which my uncle has this "does not simply choose any mechanic" qualification.

so yeah, i am f***ing pissed off right now, i am supposed to travel to kl tomorrow, but this shit totally botched up my plans.