Glass Material in Blender 2.9+

https://youtu.be/XPFmIVyILhc

By Admiral Moo

This video will show you how to set up a basic glass material in Blender 2.8, 2.9 and onwards (3D rendering). This process can be used with both Cycles or Eevee; however for it look proper on the latter one should turn some screen space reflections as well as reflection cubemaps enabled too!

I hope this helps!