Yeah that’s a wipeout. First, stop using tarot cards for yes/no divination - it’s random bullshit and NOT how Tarot is supposed to be used. Prove it - try it on playing cards, try on 10 in a row - I bet you the tarot cards can’t give you a reliable result on what the suit or color of the playing cards are, so you are basing you work on fiction - don’t do that, you’re just driving yourself nuts for no reason.
Banish and cleanse, as a basic precaution. Take threats seriously even if they’re fake, because the risk is not worth it and you can manifest what you fear, so you have to clean your own psyche as much as your actual energy fields. Get back to a clean baseline.
I don’t think either is fruitful at this time. There’s nothing to appease - nobody cares what a useless impostor things and worthy entities don’t get butthurt over humans being humans.
Work with the entity in the future when you have YOUR OWN shit together and can avoid impostors and time wasting things.
There’s a reason we have multiple tutorials on how to avoid exactly this - it’s SUCH a common problem that every mage must deal with, you can’t just skip your spiritual hygiene thinking it won’t happen to you, for you are yummy and taste good with ketchup Unofficial Tutorials: Spiritual Hygiene & Defense Basics Collection