You're much better off finding a gym which specializes in training for strength or power sports (e.g.: powerlifting, Oly lifting, even a better Crossfit box) and signing on with a team. This isn't a group class, it's a team sport.

The cost-effectiveness is much higher than one-on-one training, the emphasis is on measurable results (higher totals, Crossfit games, etc.), and the group itself is competitive but supportive.

One-on-one fitness studios can be good, but it's a high-cost niche.