My kids are all multi-discipline sports people. But they are NOT indoor sports fans - you would not find then doing aerobics to a YouTube video.
I have DD15, DS14, DS10 and DD5
Throughout lockdown we go to the nearby sports field after dinner - about 6pm - and have a good 90m-2h there as a family group. Mainly focuses around football (there is a goal on the field). But also u will do some run/walking with youngest. Eldest two often do a few km running circuits with me or DH. We aim for out of breath sports for at least an hour, not light exercise.
We do that every day, 7 days a week. At home we are finding our massive trampoline getting a lot of use from all of them. I set challenges to learn tricks and moves. DS14 has taken this further to move to some on-ground gymnastics (he's not a gymnast it's just an extension of trampoline moves).
We also happen to have a very large garden project in progress involving digging over and levelling 70-odd square meters of ground. Good upper body workout!
Finally, we have a treadmill. None of the kids are fans (although DD15 goes on a couple of times a week). But it's main use is the fact that DH and I do our own daily exercise indoors on the treadmill, to save our outdoor exercise time to go as a family group every day. That's changed this week - I did my first outdoor run in ages today, it was great, now that outdoor exercise is unlimited.