There are several techniques to lessen okra sliminess, but we bet you haven't tried this one.
According to Food & Wine, you should slice okra into strips. Once you have okra strips, stir-fry them until crisp and golden.
Several sites, including Sustainable Food Center and Slices of Blue Sky, mention that stir-frying okra reduces its sliminess
This is likely owing to the short, intense heat it receives on the frying pan.
Southern Living adds that while okra cooks, sugars inside are released, which intensifies its slimy texture
If you don't cook it for too long, it shouldn't be extremely slimy. Stir-frying helps with this and gives the strips colour and crunch