Stoicism
I stumbled upon a post about this ancient philosophy. I listened to the 60-minute audio and subsequently found umpteen videos detailing the philosophy. I think this is a great philosophy for the current situation. It encourages you to take charge of what you can control and let go of what you cannot.
Wikipedia states: “According to its teachings, as social beings, the path to eudaimonia (happiness, or blessedness) for humans is found in accepting the moment as it presents itself, by not allowing oneself to be controlled by the desire for pleasure or fear of pain, by using one’s mind to understand the world and to do one’s part in nature’s plan, and by working together and treating others fairly and justly.”
This chart from The Counselling Teacher seems quite in line with the stoic teachings.
The YouTube channel Philosophies for Life has a great selection of videos pertaining to Stoicism. And several other philosophies.