Since we may not be travelling (much) anywhere in the near future, it's time to consider accruing airline status and FF miles. Ironically the hardest way to do that these days is by flying; the easiest way is to get a credit card. Now I'm not a financial advisor and don't know your situation, but for a buy-in of about $4000 charged to a card over a few months you can get somewhere between 60K and 100K miles, and you can do a lot with those miles. If nothing else, you can buy a cheap-ish economy ticket and upgrade to premium econ or business with the miles.
Plus with most of these cards you automatically get gold level status with Hilton, Marriott, Hertz and Avis. Other benefits include things like credit to spend on the plane, free Global Entry, Uber credits each month, lounge access, etc. Spend some time at the Points Guy and look at his suggestions. If you definitely know you'll be flying just one airline, or one alliance, focus on that. For most folks it makes more sense to get highly transferable miles on an Amex Platinum or a Chase Sapphire card. Again YMMV.
I find the easiest way to meet the required spend on a card is to put a big-ticket item on it, like property tax or income tax. You'll pay a convenience fee of say 2% but factor that into what you get in return. And make sure you are in the airline's FF plan before you board the plane!