How to convert an easily winning endgame easily?

@hvfda said in #1:

I have a bad habit of messing up easily winning endgames. Today I failed to convert this (I was black) with more than 10 minutes on the clock.

lichess.org/analysis/standard/6k1/p1r3p1/Rb2p3/8/3PpP2/4P1P1/4K2P/8_w_-_-_0_35

What should I learn?
Endgame books teach how to win technical positions like KP vs K, but I think I need much more basic things like general priniciples in endgames.

(The question is not about this specific position, but rather about the method for general improvement, so I post it here.)
pls post game links only then we will be able to point out your mistakes.

this endgame you posted is pretty hard to win. TBH i thought it was a draw at first glance because-

1. all your pawns were split
2. all your opponent's pawns were connected
3. you had doubled pawns
   even though you were up 2 points, this seemed like a draw to me, before i turned on stockfish.
   well the first thing i noticed was that you got flagged in a classical game, which seems highly unusual to me, and after opening game in new tab, I noticed you spent 12 seconds on 4. c4, 23 seconds on 5.Nc6, 15 on 6. Be7, and so on, why are you spending so much time in the opening? and if you have 10 seconds while your opponent has 20 minutes, there is something seriously wrong with your time management, this video should help- https://www.youtube.com/watch?v=d_K8Xe3obMM

Experience. There is no short cut.

"Endgame books teach how to win technical positions like KP vs K, but I think I need much more basic things like general principles in endgames."

Not honestly sure what this statement means (if anything). You can't get any more basic than K + P vs K...and knowledge of that is essential for anything else.

As to the position you included: the most important thing there is your passed pawn. So either move your king over there to shepherd it, or consider another idea to free it up: Rd7-d5 with the idea of Ra5, simplifying further.