Videos are a particularly BAD source of information (unless you want to remain a beginner forever) since they do not teach you HOW to make the movements.

You can alays tell when you have a student that 'learns' by watching videos, rather than being shown by an instructor how the body makes the movements - they are the dancers that stutter and weave through 'steps' as if... well, as if they 'saw' what to do. Dance is an illusion, and these folks are the ones that 'dip' and 'sway' in all the wrong, awkward places.

Also, video is not 3D as is dancing, so even if by some miracle you actually figured out what body movement was necessary to make the shape, you'd still not see it in depth of field, hence you would look like thoose ungrounded, disattached people you see at the socials. You do NOT want to 'learn' that way. If it was possible, then trust me, you would see everyone using them and no private lessons given.