Earlier quoted context omitted.
Let me preface: I've abstained from going to the gym since we went into lockdown, and even now that we are out of it here. I am looking into equipment at home, and I can at least keep my fitness, if not my strength, by going mountain biking. That said, there are many types of training you can't do without the right equipment, so it's at least a bit more than just wanting to be with others. Strength training/powerlift…
Can't you do calisthenics ? There's a ton of possible exercise which uses only your body weight, or only minimal equipment like a pull-up bar. Can you do a one-legged squat? Pushup with a hand stand? Dragon flag? Many other exercises on youtube which make you sweat in minutes.
That's all I'm trying to point out, for many disciplines there is no substitute for equipment. But so be it, these are unique times.