I can understand why ChesswithNickolay has not solved the hard problem at #22. But I'm not sure why no one has responded to the easy one at #21.
Who hate endgame study

You can check analysis. [#21]
I don't need to check analysis. I already know the answer. I was asking for your answer.

#22 is pretty hard, but again maybe I am just used to having the position in a larger size?
That's an imaginative reason for failing to solve a chess problem. I haven't heard that one before. But if you need the position in a larger size, you can set it up on your board at home.

I mentioned that the problem at #21 included an important lesson. The lesson is that when defending with a king against a king and pawn, if the opposing king is on the same rank as the pawn, obtaining the distant opposition is sufficient for a draw. If the opposing king is one rank ahead of the pawn, only the direct opposition will suffice for a draw, and if the opposing king is two ranks ahead of the pawn, you will lose.
Here is another problem that includes an important lesson.
White to play and draw.

White to play and draw. [#63]
Easy, maintain distant opposition unless you can take opposition. Then it's a draw.
Let's play this one. What's your first move for White?

I'm terrible when it comes to endgame...🥲🥲
But I'm sure you have some other redeeming qualities.

I'm terrible when it comes to endgame...🥲🥲
But I'm sure you have some other redeeming qualities.
I hope so...😶😶

Here is another problem that includes an important lesson.
White to play and draw.
Kh1!
Correct. Taking the long distant opposition is White's only drawing move. Your first suggestion of maintaining the distant opposition fails. After 1. Kf1 Kb2 2. Kf2 Kb3 3. Kf3 Kb4, White can no longer keep the opposition.
The lesson from this problem is avoiding the false opposition, which occurs when you take the opposition but can't keep it.

You can check analysis. [#21]
I don't need to check analysis. I already know the answer. I was asking for your answer.
Oh, what's the puzzle again though?
You need to either look back to see or forget about this one.
Yes.