I tried that but reddit changed the minus to a dot, but it's basically the search term you wanna exclude in "", and minus in front like -"unwanted"

This used to work always, however now it increasingly does not, it does still work for say excluding subscribed channels that are unrelated to the search by saying -"subscribed" or -subscribed, or you can say -"recommended"

Maybe there is a similar trick with intitle, not sure, just like ot used to work with google search, but they keep changing things, like it used to be +"searchword" +"includesecondword", but now it is "searchword" && "includesecondword"