The monitor itself stays in place via gravity on the stand, and it’s a bit wobbly if you try to tilt the monitor angle back or forth. Doesn’t feel 100% secure but it is. If you’re going to tilt the monitor do it from the bottom sides of the monitor, and not the top.
https://www.amazon.com/Dell-S2719H-Monitor-27-Black/dp/B07BRVWZXC