Costco (in Canada at least) has these sweet rubber mats that remind me of the gym. Way cheaper than Amazon since they are heavy as heck! It's flat on the other side :
Synergee Foam & Rubber Flooring | Synergee Fitness USA
Amazon.com: SUPERJARE 0.4 Inch Gym Flooring for Home Gym, 6 Tiles Gym Floor Mat with Heavy Duty Rubber Top, Interlocking Rubber Flooring Mats, 24" x 24" Workout Exercise Equipment Mats (24 sqft) :
Soozier 4'x6'x2'' Folding Gymnastics Tumbling Mat, Exercise Mat with Carrying Handles for Yoga, MMA, Martial Arts, Stretching, Blue | Aosom Canada
The Best Home Gym Flooring Options (2023) | Garage Gym Reviews
Puzzle Gym Mats, Home Gym - Grey (120 x 120 cm) - DragonSports.eu