It looks like you're referring to the song by Second Civil (a popular Indonesian band from the 2000s–2010s), and you want to learn how to play it on guitar.
↓ ↓↑ ↑↓↑ (repeated per chord) Or for verses: ↓–↓↑ – ↓↑↓– (– = short pause) second civil aku kau dan kenangan ku belajar gitar ah