First link - Option 1: I click Windows+I. It tells me to go to update and security, there is no option for "update and security" in Windows 11. I click "privacy and security", there is no "troubleshoot" option. I click "windows update", there is no "troubleshoot" option.
Option 2: I click alt+shift. Nothing happens.
Option 3: Can't do because it doesn't let me switch to Japanese language.
Option 4: I tried uninstalling/reinstalling. Nothing happens.
Second link - This person says they can switch to Japanese but they can't write in kana so it's not the same issue I'm having where I just cannot switch to Japanese.
Third link - Option 1a: This is for changing the default keyboard which I'm not trying to do. I want to keep English as the default and switch to Japanese as needed.
Option 1b: This is only if the user is having trouble typing characters in Japanese which is not the issue I'm having.
Option 2: It's the same as First Link, option 1 which I don't have those options on Windows 11 so I don't know where to find this option.
Option 3: Again, uninstalling/reinstalling doesn't fix the issue.
Fourth link - This person says they can switch to Japanese but they can't write in kana so it's not the same issue I'm having where I just cannot switch to Japanese.
Fifth link - This just goes over how to install the language pack and various options which I've already done.
Sixth link - There is no option to change language through the control panel. Only date and time.
Seventh link - I already have it installed/options don't exist in Windows 11.
Eight link - Same as another link.
Ninth link - The Microsoft Fixit link is broken and the following steps don't correspond to the options in Windows 11 and I already have it installed anyway.
Tenth link - It just goes over how to install.
Youtube video - I tried this and it lets me switch to Japanese... once. And then when I switch to English and then try to go back to Japanese, it doesn't let me switch back.
Thank you for helping me with this issue.