Check if you share mutual friends with the target profile. Sometimes, content tagged by mutual friends or posted on public pages remains visible.

Facebook stores user privacy settings on secure, encrypted servers, not on your local device.

Is there any way I can check out a locked Facebook profile in 2022?

If you are concerned about your own privacy, it is important to know that you can ⁠control who can see what's on your Facebook profile through your settings. Control who can see what's on your Facebook profile