The 21-year-old arrived from Sevilla for a fee approaching £7million in the summer but has managed just 76 minutes of Barclays Premier League action over five appearances.
He admits English football is faster and more physical than what he has been used to and has spent the last couple of months trying to bulk up a bit more.
While he has been used sparingly by manager Brendan Rodgers, Alberto is seen as a long-term prospect and gave a hint of his talent with an Anfield hat-trick playing for the Under-21s against Sunderland in September.
"I would like to play more, I am waiting for my chances. The truth is I need to play more and I hope to do it," said the Spaniard.
"I want to play but there are many colleagues that are working well.
"I have to wait for the manager to start having confidence in me and (then) repay his confidence on the pitch.
"I have been working a few months and I have learned and I am going to wait for my moment."
Liverpool last week