After playing for a bit, I've noticed that the Xbox fan started to be louder, the air around it was fairly warm, inside the compartment because some of it was being recirculated, and since the series x has an intake in the back (and bottom), it keeps getting warmer and warmer.
After making this the air now is diverted outside (thanks to its 45degree vents) and it no longer circulates inside the compartment, so the Xbox takes nice and fresh air all the time now
Result is Nice and Cool Xbox series X after long sessions! I've had it for more than 1 year, now it your turn to make it cooler so it lasts many many years!
P.S. The plug is to avoid some of the air to escape to the back, it has been on mine for 1y also.
The author marked this model as their own original creation.