A/C compressor issues

I have the SUV listed above LT model, VIN Z with front and rear A/C controls.

I changed out my A/C compressor clutch due to not turning. A/C was working fine. Two months later (now) the compressor is squealing while engine is running. Much like a power steering pump does when low on oil. I also noticed that I could not hear the clicking sound when the clutch engages.

Question 1; does the compressor just need oil or replaced? If need be I can record the sound but not sure if it would any justice.

Question 2; which A/C Compressor do I purchase? This is what I see but I am still confused as to which one is correct. Here is an example:
FitsGAS; Front; Dual Zone Climate Control with Automatic Controls (you can set a specific numeric temperature) (CJ2), Front; Dual Zone Climate Control with Manual Controls (blue/red dials only), Rear Auxiliary A/C (C69)
OrFLEX Fuel; Front; Dual Zone Climate Control with Automatic Controls (you can set a specific numeric temperature) (CJ2), Front; Dual Zone Climate Control with Manual Controls (blue/red dials only), Rear Auxiliary A/C (C69)

Question 3; The vacuum pump would this work https://www.harborfreight.com/air-vacuum-pump-with-r134a-and-r12-connectors-96677.html
OR
should I purchase this https://www.harborfreight.com/25-cfm-vacuum-pump-98076.html
OR
Just have a shop fill the R134A

I am sure I will have more questions I would prefer to do the work myself and learn than have some one do it for me.