Perlegear Universal TV Stand Legs for Most 37–86 90 Inch TVs up to 150 lbs, Height Adjustable TV Legs Replacement Suitable for Soundbar, Table Top Stand Base Max VESA 800 x 500mm, PGTVS20

Something like this might work better. It's a heavy, narrow base and would replace the TV's built-in feet. I have one of these to mount an admittedly smaller TV on top of an Ikea Kallax:https://www.amazon.com/dp/B0BN5JD6XWThere are a ton of these on Amazon and they advertise being able to work with TVs that size and weight.