1st and 2nd gear is out bloggy. Help please.

Hi, my commuter is down. Need some assistance to trouble shoot. First off, I’d like to say thanks in advance for any tips or help. I’m driving a 1990 GS 4 door. Everything has been fine since I’ve bought the car 4 years ago for my commuter. Lately though, my first and second gear is very sluggish. I can be driving at 30-40 mph on 1st or 2nd at 2k-3k RPM. Then when i shift to 3rd the RPM feels normal and the gearing is corrected. Was thinking the there is something wrong with the shift. Could be possible that the clutch is out? or even the 1st and 2nd gear in the tranny? TNX again for any help, really appreciated.