How do you stay active during Covid-19?

I used to do a lot of sports and bike/walk everywhere so I always got enough activity, but now my classes are all online and I basically sit in my house all the time. I have a gym membership, but I have to be very lucky to be able to go 2x per week with the reservation system. I'd rather do a sport again though, such as kickboxing, but we're not allowed to do group sports.
I noticed my body becoming weaker and less toned. I really want to turn it around, but I don't really like going on a walk alone that much.
How do you guys stay active and motivated?
How do you stay active during Covid-19?
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