Is one sinful for swimming in a mixed-gender swimming pool while lowering the gaze?

It is not permissible for a man to swim in a mixed pool where men and women are present, as this exposes awrahs (private parts) and violates sanctities, making it difficult to lower the gaze. This can be an entryway for Satan, as Allah Almighty says: "O you who have believed, do not follow the footsteps of Satan." Therefore, one must avoid such pools and seek out pools where Islamic guidelines are observed. If he does not find any, then he should look for other sports.