Girona indeed failed to win in their first match but a draw is not a bad start either, especially since that 1 point is obtained through an away match. But I also agree with you, if Girona cannot improve their performance, then this will be a tough season for them because they will not only compete in La Liga but also have to play in the Champions League. With their current level and performance, it's still not enough to keep them safe in the Champions League.
This is not a bad start for the team even though this was not what was expected to be the outcome of the match. They still have a lot of time to repair their mistakes and they should do that in a jiffy because the earlier they do it, the better for them and how far they can go in the league. The champions league also awaits them, and performance like this can’t make them go that far in the champions league if they don’t improve.
Pre-season friendlies and their results dictate nothing. Even if a team loses all their matches, we can't write them off. Pre season is all about coaches finding out the right players in their starting XIs. Testing out as many players as they can. That's what preseason is all about.
Preseason are not used to judge the best performance of a team or what they’re going to be like when the season finally begins. It’s majorly use to test new players, and try out new strategies before the main league begins. I have seen a lot of teams that have played poorly in the preseason and did better in the main league and also have happened the other way round.