Gym Flooring Or Tiles

Hi all,

I was wondering what gym tiles or flooring (preferably in Australia!) people are using for Fitness Blender workouts?

I purchased some EVA foam interlocking tiles from Bunnings (see attached photo of my setup), but I find for some of the cardio and HIIT exercises in the FB workouts, that they come apart too easily.

Any suggestions on a fix, or suggestions on what tiles or gym flooring to use?

I'm trying to avoid using a basic exercise mat on the floorboards. I like having 2x2m coverage for when I do forward, side lunges, etc, knowing a large portion of the ground is going to provide a little bit of comfort.

Thanks!