I just did a Bing search for 'where to buy fake brick for interior use' and the third listing was for Lowes, "Faux Brick Panels | Brick Veneer" many colors. Not sure what it's like or how much it costs but take a look and you might have your source. You'll have to put the
https://www. in front of this but here's the non-hot link. Or just do the search and pick one of the results returned.
lowes.com/pl/Faux-brick-panels--Brick-veneer-Brick-veneer-accessories-Siding-stone-veneer-Building-supplies/4294684426?refinement=479042542&cm_mmc=src-_-c-_-prd-_-lum-_-bing-_-lumber-_-DSA_LUM_211_Panel-Products-And-Siding-_-siding-_-0-_-0&msclkid=f12156341bcd1ad4785a08f6d9eb4f07&gclid=C PHk-df0vekCFUZ8gQodSPQO_g&gclsrc=ds