The 21-year-old Spaniard left Sevilla for Merseyside in a £7m deal during the summer but has been offered just 76 minutes of Premier League action by Reds manager Brendan Rodgers.
Liverpool's best start to a season for many campaigns will also have played its part in limiting Alberto's opportunities this season.
All of his five league appearances, so far, have been as a substitute and Alberto admits he has had to work hard in the gym to improve his physical conditioning.
Alberto said: "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.
"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.
"I have discovered it is faster football, more physical, and you have to be in better physical condition.
"I have improved in many aspects: my physique is better and I am heavier now - these details contribute to better preparation."