What kind of lifting is good for a square jaw caused by sagging skin?

No, I lived thinking that I had an oval-shaped face.

When I was working, I developed a habit of chewing gum while working.

My temporomandibular joint was developed, so I felt like my jaw was slightly square.

But I don't know if it's just my imagination, but I feel like things got better after I changed my habits.

As I get older, I feel like my cheeks are sagging and my jawline is starting to look like a double chin.

When I looked in the mirror, I noticed that my chin was strangely short below my lower lip.

My jaw joints on both sides have developed so my jaw looks like a square one;;;

It's my face, but how come I don't look at it and then one day I find out that it has changed drastically;;

My face isn't that big, but as I get older, my face loses weight, my lower jaw develops, and my crown of the head flattens out, making my face look square like a Lego face...

If I get something like jawline botox or lifting, will it be able to complement my developed jawline and make my lower face look a little slimmer?