I’d ditch the daily cardio if I were you. Wastes muscle, causes carb cravings, and typically does not produce the weight loss/weight control people expect.
I was tinkering with weights for a good while, but what really made the difference for me was paying a trainer to work with me. Cost me $400 for 8 sessions but was money well spent. Gave me a good foundation to build on.
If you think that your knees are old now, wait until another 10 years or so. Something called Total Knee Replacements come into play. Myself, I am at that stage now.
I have intermittent pain/aches, but I can still go run 5 miles once a week.
I usually do road bike or elliptical for cardio to not beat up on them too bad.
But I have found that HOKA brand shoes are awesome for being easy on the knees.
There may not be any scientific proof of this, but I am convinced the reason is all of our modern comforts that replace the need for males to produce testosterone.
The silly California city liberal man stereotype I don’t think even ought to be included in the pool at large, as these men are hardly distinguishable from women in both behavior and sound. I suspect they are dragging down the average.
But even the rugged ranchers, oil rig workers, etc are becoming vanishingly rare, because technology is supplementing the need for their masculinity.
Same with leisure. Playing video games, watching YouTube, and posting pics on Instagram require much less testosterone than lifting weights and playing football.
Years ago I had a personal trainer that I went to 3 times per week. I used to joke around with the trainer and told her I hated leg work. So she had be do a wall sit and I opened my big mouth and told her that these were easy and if she put a bit weight on my lap, It could hold my beer and chips. So she changed to workout. Squats. And Lunges (which I hate more than squats), I never mad fun of anything after that.