It's 'easy' to blame Walker because he's quite literally only playing because of his defensive 'ability', but when he's letting a former teammate and well-known one-footed player back onto his right foot and falling on his ass in the process, yes, it's easy to blame him and rightfully so. He's been shit all season.
And no, I'm not just saying this because he's an awful person off the pitch. Before he was given a new deal, I said it was the perfect time to go our separate ways.
This brings up my question as to why Pep all of a sudden feels the need to constantly play Walker and Alvarez despite not playing the former at all and bringing on the latter seemingly without any doubt when KDB got hurt in the CL final last season.