In my 30’s I could hit 300-325 regularly.
Now I can touch it once or twice a year, usually either with a tail wind (like this pic), or in the winter when the ground is hard.
I did just go to a lesson with my wife (she didn’t want to go alone) and got a decent tip to help, and also got a new driver professionally fitted for me, which almost 100% cured my slice.
Sounds like you’ve known how to play for a long time. Ironically, in my 30s I was worse than I am now.
But in hindsight that’s because I did not do a good job of seeking out an instructor. I thought I could figure it all out myself and through YouTube help.
It took in-person lessons to teach me the real mechanics.