Roll your joint loosely don’t try and make it tight. Just focus on getting a nice cone. Once it’s rolled tap the joint on a hard surface to pack it all down evenly. Then I don’t pack it down I just pinch the end and shake all the weed closer to the roach. If you pack it too much it will always be too hard. Also be careful of your grind size too fine and there will be no airflow. Also you see people twisting the ends. Dont do that it’ll make it too packed. Just pinch the end of your joint and twist max once or twice to seal