Does Depression/ Mental health get worse with age?

Feel like I’m just spiralling tbh, I had my problems when I was 15 n 16 but they don’t really compare to now. I don’t self harm anymore but feel worse. Even after starting an antidepressant last year and having CBT therapy.

Is it normal for mental health to worsen with age? Hence probably the reason why I’ve gravitated to drugs as I’ve aged.