I mean nobody should be shocked at this point, we all knew the squad has huge flaws in advance to this game.
Team lacks basically everything, pick what you want. Like even technique isn't what it used to be for the most part, and let's not even start with speed, intensity, decision making etc.
The veterans aren't cutting it anymore, seeing Pique and Busquets nowadays is just tragic. But that doesn't automatically make the young players good, most are just average or still too young. We basically don't have a single reliable top class player in the 23-30 age range, not a single one. Frenkie is good, but he still doesn't have a leading role in midfield. Besides that? Ter Stegen who can't stop making stupid mistakes, always injured/out of form Dembele, failed Coutinho for the few people still remembering him, Depay who is alright for a free transfer but that's it...and that leaves us with basically just a bunch of talents in their 1st/2nd real season, some past-their-prime veterans who aren't world class any longer but still think they are and players like Roberto, Braithwaite, Luuk...
All of this goes back to the countless failed transfers of the last 5 years, most notably after Neymar left. Basically every big transfer since then failed and we wasted a comical amount of money in the process, and even all the smaller flops that could be sold again didn't get us anywhere when it comes to developing a team. To this day i still can't really process how we spent 400M on 3 players and all of them flopped spectacularly, that's just so crazy to think about. We could desperately need that money now, but either way the lack of a new grown team core would still be an issue even if we had more cash to waste now.
This team would need AT LEAST one experienced world class defender, midfielder and attacker right now to get back some structure short term. But that won't happen, so it'll take a while to form a proper team again.
We might have a shot in EL, if we get some momentum but realistically that's the current level.