What do I do if the headset straps fell off or are too loose?

Oculus Go: Run the straps back through the loops, then back around the loop and press them to the velcro fabric at the desired length.

Pico G2/4KS: Run the straps back through the buckles on the side straps and pull to tighten.

Pico Neo 3: Pico Neo straps are connected to the headset and can be tightened using the adjustment dial.