You can try to flatten it with a heavy object, soak it in hot water or use a hot hair dryer and put it in a warm place overnight, it may take longer in the cold season, I believe it is what you need after unfolding, hope you can understand.
eBay
Dopamine Girly Bedroom Decor Plush Carpet Light Luxury Carpets for Living Room Pink Shaped Plush Rug Fluffy Soft Thick Floor Mat
Aliexpress UK
The bottom of the fireproof fireplace mat also features anti-slip textures to increase friction and effectively prevent it from sliding on the floor. It protects hardwood floors and carpets from fireplace sparks and high temperatures.
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Luxury Retro Carpets for Living Room Irregular Shape Bedroom Decor Soft Carpet Modern Art Cloakroom Rug Thickened Anti-slip Mat
Aliexpress UK
🖥️ BesWin Heavy-Duty Office Chair Mat. This mat is specifically designed forlow pile carpets (flat carpeted floors). Superior Carpet Protection: Protects your low pile carpets from wear, tear, and indentation caused by moving chair casters.
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Nordic Style Carpets for Living Room Minimalist Bedroom Decor Abstract Carpet Home Plush Floor Mat Thicken Non-slip Lounge Rug
Aliexpress UK
Size: 3FT, 4FT, 5FT, 6FT, 7FT, 8FT, 9FT, 10FT, 11FT, 12FT, 14FT, 15FT, 16FT, 18FT, 20FT. Its strong design can withstand the weight of furniture while also protecting it from scuffs, scratches, and spills.
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New Carpet Fixing Stickers Double Faced High Adhesive Car Carpet Fixed Patches Home Floor Foot Mats Anti Skid Grip Tapes 2/50pcs
Aliexpress UK
Easy to clean : Simply shake, vacuum, or hose down for quick maintenance. Non slip rubber backing : Prevents sliding and ensures the mat stays securely in place on all floor types. Low profile design : Allows doors to open easily without getting caught on the mat.
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Nordic Long Corridor Carpet Geometry Decor Hall Runner Floor Mat Light Luxury Hallway Carpets Anti-slip Room Bedside Area Rug
Aliexpress UK
PVC Chairmat NonSlip Office Chair Desk Mat Floor Carpet Protector Door Mat Clear. No more Marks on Floor: The office floor protector mat is suitable for wooden floor, stone floor and other hard floor.
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Modern Carpets for Living Room Abstract Large Area Plush Rugs Bedroom Decor Bedside Carpet Grey Washable Floor Mat Lounge Rug
Aliexpress UK
🐱 Wide Range Of Applications: You Can Also Install Cat Sofa Protection On Walls, Carpets, Mattresses, Chairs, Doors, Car Seats, Sofa Armrests, Screens, Etc. 🐱Protect Furniture: It Will Protect The Interior Of Your Sofa From The Claws Of Your Pet And Remain Intact.
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Thickened Study Carpet Modern Abstract Carpets for Living Room Home Washable Plush Floor Mat Minimalist Bedroom Decor Art Rug
Aliexpress UK
The rounded corners fit snugly against the floor, preventing curling, and are ideal for use with fireplaces, log burners, and wood stoves. Fireproof Mat 1. [Waterproof, Oilproof & Dustproof] The surface is treated with an anti-static silicone coating, providing waterproof, oilproof, and dustproof protection.
eBay
Luxury European Style Carpets Living Room Sofa Side Rugs Home Decoration Soft Golden Carpet Bedroom Cloakroom Hallway Floor Mat
Aliexpress UK