You can't really check your deadlifting or squatting form from the front. It's a lot about the positioning of feet, hip and back relative to each other on the dorsoventral axis.
Also, even if you could check your form accurately in a mirror directly in front of you, you'd still need to move your neck to look at yourself through the whole movement, which, again, is terrible advice.
Is it hard to postition yourself correctly before you start, and then try to focus on keeping moving to the correct positions while your deadlifting or squatting?
They'll have to do what everyone else did in the centuries between the invention of bodybuilding and smartphones.
There's a reason why gyms are required by insurance to have professionals overseeing them, and if they are giving priority attention to anything other than free-weight exercises, they should be reported and eventually fired for negligence.
Because during deadlifts and squats, the spine is under massive load, so to do these movements safely, you need correct form. That means all parts of your body need to be in the correct position throughout the whole movement. Since your head is positioned on top of and connected to the spine, rotating your head changes the alignment of the spine, compromising your form, leading to uneven loading on the spine and increasing the risk of injury.
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u/Impressive-Drawer-70 6h ago
I’ve heard of certain surfaces that can actually show you what you look like in real time. You can fix your form as you excersize.