The 21-year-old joined the Spanish outfit after failing to force his way into the first team at Anfield under manager Brendan Rodgers last season.
Alberto told Malaga TV: "At Liverpool, things are at a much higher level, with players like Luis Suarez, [Philippe] Coutinho - it was a little difficult for me to enter the dynamic of the group, as English football is completely different.
"But I really have learned a great deal. What I've learned there, I hope to offer Malaga."
Alberto joined Liverpool from Sevilla last year.