100% you can blame the Glazers, and here is the why.
2013;
Out: Scholes, Fabio Zaha and Anderson.
In: Mata and Fellaini.
2014;
Out: Kagawa, Evra, Fletcher, Vidic, Ferdinand and Giggs (incl. others)
In: Di Maria, Shaw, Herrera, Rojo, Blind and Falcao.
2015:
Out: Di Maria, Chicharito, Evans, van Persie, Nani, Rafael and Cleverley.
In: Martial, Schneiderlin, Depay, Darmian and Schweinsteiger.
2016:
Out: Schneiderlin, Depay, Schweinsteiger.
In: Pogba, Mkhitaryan, Bailley and Zlatan.
2017:
Out: Rooney, Zlatan, Mkhitarya.
In: Lakaku, Matic, Lindleof and Sanchez
2018:
Out: Blind, Fellaini.
In: Fred, Dalot and Grant
2019:
Out: Lakaku, Smalling, Darmian, Valencia, Herrera and Sanchez.
In: Maguire, Wan-Bissaka and James
It doesn't take a rocket scientist to see that over the last 6 years we have had a serious depletion of both quality and experience from our team that has never been sufficiently replaced.
The only constant that we've had over those years: Glazers as owners and Ed Woodward as CEO.
Where we are right now is as a result of the transfer policy that the club, the Glazers, have overseen. They have allowed managers like Moyes and LvG to gut our squads without replacing the quality.
We got a manager in, Mourinho, who identified the gaps in quality and experience, but he wasn't backed. He was asked to win with what he had.
Consider that for a second. We lost Vidic, Evra, Giggs, Scholes, Fletcher, van Persie, Nani, Rafael and replaced them with Mata, Fellaini, Herrera, Schneiderlin, Depay, Blind.
Its no surprise that we are where we are.
Now we are trying to blood kids into the team because they refuse to invest where it is needed. But hey, that's ok, the fans will go after the manager because most of them are like seagulls following trawlers.