What has previously given you joy?
So for me, just me, art, food with spices, jogging, night sky (when clear) and mending fixing things rather than replacing if possible gives me joy.
I go to many exhibitions, paint, draw and have an amazing digital camera which I continue to learn the controls (the instruction manual is huge), 5 evenings a week, food is either Asian, South American or Middle Eastern recipes. I do many sewing machine repairs and will happily get the soldering iron out if things split or break.
But this is all personal, what has given you joy before? Do you like clothes, would you make or knit your own?
What food gives you joy, get a good recipe book (research look at reviews ask around) or borrow from library and copy recipes and master your favourite cuisine.
Do you want to care for something? Would a pet within your space, time and budget be an option?
Would you consider becoming an extra in tv, there is a middle aged woman who is the most requested extra in tv, which is cool?
Local comedy?
written word or poetry?
board games?
chess?
playing the oboe?
netball?
There is no answer to this, just to push any interest you have further.
I hate social media but if you can find FB groups that are special interest you might find joy and companionship there.