Air Gap/ missing layers when printing?

Hey, it seems like you are new to 3D printing and the Snapmaker, can I recommend, when and where you have time, you have a read of this forum post: 3d Print Guide_Walk Through - Snapmaker 2.0 / Getting Started - Snapmaker: where creation happens.

There are a lot of useful guides on there including calibrating your E-steps (something not provided on the Snapmaker’s touch pad as a calibration but is critical to getting good quality prints), and may be part of your issues experienced here.

In terms of your print, I am not noticing any strining but it does also appear like you are having some heat issues, so not sure what temperature you are currently printing at, this is changed in the filament settings in the top right hand corner, not in the machine settings. Should you wish you can go as far as doing a temperature calibration tower to determine the best temperature for the filament.