i would not know what a locked profile is. you cannot view non public activity on any profile. those profiles do not use the same display name as their profile name. just like you do. your profile name is bladeseven and not blade7. and if you got a 404 by clicking on their names, those profiles might actually already be in the process of being deleted. itch will remove fake ratings, but it was said, that they remove those in bulk and not individually.
and as it was also said you should not post usernames of real users. https://itch.io/post/7586962 . why only protect your good ratings? those were made on the same day, maybe they are fake! i said that to illustrate that it being a 1 star rating is not proof for a fake rating. same as two 5 star ratings on the same day are not proof for you improving your rating with fake ratings.
the problem with your case is the straisand effect and the fact that some people really do not like your content. they have the same right to vote it down as people liking it have to vote it up. the real measure of your popularity is your follower count. some things here hint that you have fake ratings and with your discord threads it is likely. but it is unlikely that your game only has good ratings. give itch time to sort out the real accounts. as i understand it, they do not remove the ratings, but remove the whole accounts.