Feeling Old

Lately I’ve felt so old and I want to get past it.
Some recent circumstances are: my father died last month. I’m recovering from a broken patella that’s had me in a brace from my ankle to my thigh for three months (no driving, walking, etc.).
I can intellectually see that both of these have been things to work through.
I look in the mirror and am VERY critical of my aging body, my wrinkles, my hair, etc.
I feel lethargic.
I feel sad.
My thought lately is: I’m old and I don’t want to be.
My result is – I’m acting old.

Would love some help getting out of this negativity. It really is not like me
I’ve tried positive thoughts but they feel disingenuous and are SO much work.
Thank you