How to troubleshoot a Ford Ranger's transmission issues?

I have been experiencing trouble with the transmission of my Ford Ranger. It is frequently slipping and shifting roughly. What could be causing this issue and how can I fix it?

It sounds like your transmission may be low on fluid. Check the fluid level using the dipstick and add more if necessary. If that doesn't solve the issue, it could be a sign of a more serious problem and you should take your car to a mechanic.

Another possible cause for this could be a malfunctioning solenoid. You can try to replace it yourself, but it is a complicated process so it's best to consult a professional mechanic.