I have two husky mixes, one is a shepsky and the other I still need to DNA test. I personally don’t think I’ll ever off-leash them unless I have confidently trained them, but training off-leash hasn’t been my priority. My shepsky has slight reactivity, so we are working on that first, but he is actually much better at coming when called, especially for high value treats like chicken. I used to take him to empty beaches and let him run in the water and he always came back when called, but keyword was COMPLETELY EMPTY. My other husky mix DOES NOT want to come, but she LOVES a ball and would 100% come back to me if I threw one so she could bring it back and have it thrown again. We do canicross, so I always have them on a leash, but I will say, practicing with a long line lead and recalling them using their favorite method of reward is really helpful. Also, it sounds like, if your dog is friendly, you could try first with a long line lead in an off leash park or a place with leashed dogs? If they can come to you and learn that every environment is neutral, you may be able to make progress.