Working but no hot air is coming out and hi limit thermostat gets tripped and if i reset it it works fine for about 2 uses and then it stops blowing hot air

Brand: LG
Model Number: DLGX3371V
Main Symptom: works but doesnt blow hot air/ hi limit thermostat gets tripped and is resetable but after 1 or 2 uses will go back to no hot air.
What happens & when: works but no hot air is coming out and hi limit thermostat gets tripped. If i reset it it works fine for about 2 uses and then it stops blowing hot air and thermostat will get tripped.

Error Code (if any): d80 / there is no blockages (i have already dismantle and cleaned the dryer)
Parts or tests already tried:
Photos / video link:

If the exterior vent is removed from the wall connection and directed out a window (if possible), will the dryer operate normally?

i don’t think so. I have read a couple threads and i believe it is the High Limit Thermostat sensor because the switch does work and resets the sensor until it gets tripped.

If the failure does occur when the dryer vent is disconnected, there is a good chance the high limit thermostat is starting to weaken. However, if the failure stops when the vent is removed, there is likely a partial clog or full clog in the duct leading from the inside to the outside of the home.

High limit thermostat- AGM30045804 Dryer High Limit Thermostat | Genuine Lg OEM In Stock