Adult Tooth Partial Orthodontics

Maybe because my lower jaw is narrow, since I was young, all my lower teeth have been trying to fit into a small space, possibly affecting each other... My front lower teeth are crooked and my bite is uneven, so I had a bit of a complex about it. Since they are at the bottom, they are not very visible, so I just turned 50 like this. Therefore, I brush my teeth more diligently, paying attention to my uneven front teeth, but every time I go for a scaling at the dentist, I am told that because my lower teeth are misaligned, even if I brush diligently, plaque tends to form more easily and it can affect gum health...

Should I get my lower teeth orthodontically corrected now... I have many concerns. Has anyone tried partial orthodontics at this age?

I've heard that the correction period takes longer as you get older. How long does it usually take?