baby gate for steps

My 15 month old son has figured out how open the baby gate😲 anyone have any recommendations for one that's harder to figure out... this one gives me a hard time to open but he grabs it and kinda "bends" the door and it pops open. I tried making it as tight as tight as I can but he somehow figured a way around it?!?! not to mention this style sucks with the moldings