I was facing the same issue in my 2018 WagonR , Firstly the compressor failed, got it replaced with a kabli one. After whole replacement and refilling of gas, The Ac again stopped blowing cold air.
went to Eastern AC in Saddar, Rawalpindi.
They charged me 5k for opening the dashboard and inspecting the cooling coil.
Upon inspection there was a leak in the cooling coil and got it replaced with a chinese one. Original one was quoted for 22k
The cooling coil costed 14k
topped up the gas and AC has been running ice cold since 2022 September
Get your cooling coil checked, Alot of those failing in the newer cars as well