I had the same issue and bought a stand similar to this so that my tv is still on a table top but raised up a bit to clear the height of the center channel.
> They're extremely difficult to find replacements for.
Search VESA TV legs on Amazon.
https://www.amazon.com/gp/product/B078MBL6KM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
they sell universal feet that utilize the wall mount screw holes on your tv.
Replace the feet with a higher stand - for instance:
https://www.amazon.com/gp/product/B078MBL6KM/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1
or something similar.
Uhhh... for real op? They make universal tv legs. https://www.amazon.com/dp/B078MBL6KM
Any big box store sells tv legs that fasten to the back of the tv where the wall mount would go.
Here's some on Amazon https://www.amazon.com/dp/B078MBL6KM/ref=cm_sw_r_cp_apa_glc_fabc_ZXBKJH5CVEWF1K9VWKJA?_encoding=UTF8&psc=1