96 Chevy pickup with difficulty shifting

Hello, my truck is having a hard time shifting into first and all the other gears as well. Any guess at what may be causing this issue. Could it be my clutch going out. I have to force it into first and all others. Thanks for any help.

having a hard time shifting into first and all the other gears as well.

More details please. Describe hard time. For example Do you need to push it in harder, does it make grinding noise etc. Does it have the same problem shifting into all gears including first and reverse? Any noise or grinding of gears?

Hydraulic clutch? Could well b clutch its self or if its hydraulic cud b slave cylinder. Did you check fluid level?