that’s what you need to do, but instead of posting your problem on pastebin, post your log.
open citra, open your game, if a problem occurs but citra doesn’t crash do the following:
on the top menu go to emulation > configure > debug and click on the Open Log Location button, that will open a folder with a file named citra_log, open that file, select everything, copy that and post on pastebin and share the url.
but if citra crashes you won’t be able to do that because next time you open citra, citra will delete the old log, so right after citra crashes, you need to manually locate the folder, which is in: C:\Users\your_username\AppData\Roaming\Citra\log
where your_username is your login on your windows os. now you can open citra_log, copy and paste all of it on pastebin and share the url.