I improved my strategy. I'll try to explain. Bought on the spot, sold on futures.

What's the trick? The trick is in the volume.

What should happen? For example, the price goes up, on the spot +10% i.e. +2$. At the same time, a stop triggers on the futures -1$. As a result, we give away half of the profit for the hedge via futures. But! If the price goes down. Then at -10% we buy spot (as we wanted), but now we have a nice bonus on the futures, which is the same half of the profit + funding.

Seems usual, but with futures it's really more interesting.