Requests and Help Megathread V4 (Games requests, emulator help/guides go here)

How can I get the 7z files to convert to .iso on my Samsung Tab s7 so make the roms I've downloaded playable? I've tried 3 different extracting apps and each one simply extracts the file into folder that is just filled with .h3 and .app files . Ive used the Samsung files app, RAR, Zarchive, and 7zipper. I've deleted and redownloaded both the roms I've attempted to use and have had no luck. Dolphin keeps saying there are no compatible files found in the folder I've selected. I am attempting to download LoZ Twilight Princess HD and WW HD and pulled them directed from the roms mega thread. From my research it looked like both are playable on a Samsung S7 tab with the dolphin emulator so I am not sure what I am doing wrong.

/r/Roms Thread