I followed all troubleshooting no air is coming out. The unit outside seems to be running though. Temperature is rising please help

Since the condenser appears to be working, you need to look at the air handler fan. It could be a loose wire in the thermostat, a bad air handler motor, a broken door switch a bad start /run capacitor or something in the control board. How old is the unit? Can you hear anything from the inside fan? Trying to start?

The unit is a yr old but we already had issues with is last year, somethi g

I removed the thermostat and all the wires seem to be tight in place and the connectors in good condition. When I switch the fan from auto to on and viceversa, I hear the clicking but nothig after that. The unit is a lenox and was installed about four years ago on a new home but not in use till last year when we purchased the house. We already had an issue with it, air was coming out but hot, a part in the unit was chared. This time it looks like the fan in the unit is spining and I hear the motor going but no air inside. Also there was a faint burned wire like smell in the house... I wonder if my unit is faulty

By the way, thank you very much for your reply and helping me figure this problem out. I'm not familiar with this site so I don't know if I am replying to your answer on the right place.

Thank you very much for replying. I answered to you under the section where people reply to my own question... sorry not familiar with this website format. Could you please read the streem of answers for my explanation to your question about the fan sounds and unit? Thank you!
Since the condenser appears to be working, you need to look at the air handler fan. It could be a loose wire in the thermostat, a bad air handler motor, a broken door switch a bad start /run capacitor or something in the control board. How old is the unit? Can you hear anything from the inside fan? Trying to start?