Displaying system variables on a card (AnkiDroid)

Usually, when I review a card with a new foreign word, I use either Again or Good.
But today, for some reason, I came across many cards that I know very well.
And I thought — maybe I should mark them as Easy?
But then I started to wonder if there’s actually a difference between cards that I have learned and cards that I know effortlessly.
To avoid interfering too much with FSRS and to better understand which card I’m dealing with, I came up with the idea to display variables like Stability, Repetitions, and other similar values on the card — so I can eventually come up with some rules for myself.
For example, if the card has been stable for more than 2 months, then I’ll press Easy. If it’s less than that — Good.

But I’ve run into a problem — I can’t figure out how to display these values on the card. Could you please tell me how to do it?

How can I display system variables like Stability, Difficulty, Retrievability, Reviews, and so on, on a card (AnkiDroid)?

This might not be what you’re looking for, but you should refrain from trying to make FSRS work the way you think it should be working. Just try to answer the cards as honestly as you can.
When you say this

you are basically going against what you are trying to do.
If you are unsure of what answer buttons to use in which scenario, perhaps this could help you out.
Again - You couldn’t do the card, whatever the reason
Hard - You were able to do the card, but it was challenging to remember the correct answer
Good - You were able to do the card, no particular comments about it
Easy - You were able to do the card, takes very little effort to consciously recall the correct answer
Also have a look at this to understand in a little more detail.

That’s exactly why I need some kind of numerical indicator at the moment of answering — because this characteristic is purely subjective, and I need something to rely on.
For example, if the stability of a card is more than 2 months, I can confidently press “Easy”.
But if it’s only 1.9, I’d rather press Good and go through another “checkpoint” period.
That’s just an example. I’m not saying that the decision-making algorithm will be based solely on this metric.

There is another topic with a similar discussion, perhaps you can go through it and see if anything there helps.