Before you Debunk:
Step 1: Check the credibility of the author of the meme.
Step 2: Find the date of the meme being created (is it still relevant to this day?).
Step 3: Find the qualifications of the author: remember you can tell that the user is unreliable if you see that the user follows a stream that mentions unreliable information with things such as failed fact checks, propaganda, partisan sided information without scientific or academic evidence, lack of transparency, history of violating TOS.
Step 4: If the information is not from a site wide mod/owner, the next most reliable source is from a user who has been active for at least two years (if the site wide mod meet this guideline which most of them would have, then its a bonus).
Step 5: If none of these requirements of credibility is met, there is still another criteria to consider: how active are these users? I say this just in case these users have been caught violating TOS for stuff like "Homophobia", "Racism", and "Harassment".
Step 6: Know the difference between a joke and a serious matter. Remember, there are lines you shouldn't cross and if you're not sure if the content is going to cross the line, don't post. Instead, keep it to yourself and move on.
Step 7: Look at the meme (don't just look at memes from one side of the political spectrum, go ahead and look at the other side that you'd attack, if you don't do this, then maybe you might be considered by a facts checker to be unreliable)
Step 8: Look at websites that are reliable to look up the information (regular memes from fun stream is exempt because it is pure humour). The top websites according to experts are The Associated Press, Reuters, The Weather Channel, ABC, Sydney Morning Herald, The Age, and The Conversation (written by academics and researchers).
If a user doesn't throw in sources when they post the meme or are asked the link, don't trust them.
https://www.poynter.org/fact-checking/media-literacy/2021/should-you-trust-media-bias-charts/
https://www.reddit.com/r/australia/comments/8vgokb/australia_media_bias_chart/
Step 9: If you know the user follows a stream that has failed fact checks, then don't rely on the user.