So recently I have had to blacklist some tags because I don't want to see them, and even after blacklisting them, I can still see them, whether I refresh the page I was already in or whether I reload the whole browser. Please help.

Q: My blacklist does not work!

1. Is the blacklist on? Check the "Blacklisted" section in the sidebar - if the tag is crossed out, it will not be filtered out: https://i.imgur.com/ZP5zgul.png
Click on it to re-enable it, or click on "Re-enable all" to turn all of the filters back on. On mobile, that section would be near the bottom of the page, under all the posts.

2. Make sure that your blacklist is formatted correctly. Most users' blacklists would have every tag on its own line. Having more than one tag on a line means that in order to be filtered out, the post would have to match all of them: https://i.imgur.com/tbd30PS.png

You have multiple lines in your blacklist that match 0 posts, and thus will do absolutely nothing.