There is a major technical hurdle with Pinball FX on the Nintendo Switch that makes finding a "complete" ROM/NSP difficult compared to other games.
: Early complaints about "blurry" visuals and pixelated text have been largely addressed by major performance patches. Current feedback from Seafoam Gaming notes that table text is now "perfectly readable," significantly improving playability in handheld mode. pinball fx switch rom nsp update dlc repack
The Ultimate Pinball FX Guide for Nintendo Switch: Tables, Updates, and More There is a major technical hurdle with Pinball
If you want to combine the base game, update, and all DLC into a file for convenience: pinball fx switch rom nsp update dlc repack