@gus0557
I do this all the time. I am in my mid50s and believe it is aging plus could be tied to long COVID, cardiovascular health, plus I have cervical myelopathy which is compression injury of my spinal cord. I also have peripheral neuropathy/small fiber neuropathy but don’t know if that affects my memory.

Have you seen a neurologist to have a full evaluation and brain MRI? Have you had an evaluation by a cardiologist to check vascular health? Depending on your lung function, you might see a pulmonologist and have a sleep study done for sleep apnea.