It seems that luck is very much on Barcelona's side this season in the Champions League. Barcelona occupies the last group which is inhabited by teams that tend to be no better than them, so basically Barcelona will be the favorites to qualify for the round of 16 this season.
I know Barcelona shouldn't be happy because no one knows if they can overcome all these challenges easily. Porto and Shakhtar are not to be underestimated, but I'm sure Barcelona will go ahead as planned.

Barcelona are the favourite in this group, they have good players that can make them obtain victory in every match If really they want victory and Barcelona already has a good coach that is experienced. I don't think Barcelona games in this group will be difficult for them, this is a group Barcelona expected to win all their games. Barcelona can do well on champions league this time around, they just need to increase their motivation to win more.
If you look at the quality of the teams in Group H, it is true that Barcelona is the strongest and there is no doubt that Barcelona will easily qualify from grub and even as grub champions, but with the quality of the team Barcelona currently has, it makes me a little pessimistic that they will be able to go further in the UCL this season.
I think realistically after seeing the performance of the Barcelona team in La Liga in their first few matches and I think it is not very good and not enough to fight against the strong teams in the UCL.
And being in Grub H is a big advantage for the Barcelona team.