For teams like Barcelona playing at home should not be a concern.
They need and can win the away games as well without a lot of strive. Playing at home is a great boost but they don't need the fans boost, they have stronger players that can play competitive in away games as well.
Obviously fans are always pushing Barcelona to win at home or away matches, but what is currently happening there is still a shortage in Barcelona players so that they lost yesterday to Valencia, Barcelona need the style of the game first tiki-taka but now it does not exist because the power of the coach is not like that again then what will Barcelona make so that it can be respected by other clubs.