there are 3 ways to uninstall the games.
1)with your installer gold leaf / tinfoil
2) with you nintendo switch. goto settings manage software
3) on your computer browsing in the nintedo folder in you Sd card.
also a quick note for everyone: when posting for help try to be more specific. there is difference check it out.
1) "i have a problem space on SD card unchanged)
2) " i have a problem. i am uninstalling a game Mario cart using goldleaf 0.7.0 on CFW 8.0.0 atmosphere. I have 128GB card formatted as FAT32/exFAT and 50gb used, but when i uninstall the game space on SD card remains unchanged "
I'm currently using the latest version of SX OS and installed the games using the built in installer. I uninstalled the games using the settings > manage software.