Does feeling frustrated and unable to memorize the Quran mean that God is angry with His servant?

Memorizing the entire Quran is not an obligation upon everyone, and failure to achieve this does not signify abandonment or Allah's wrath. However, neglecting this virtue might indicate a decline in commitment, as Allah Almighty says: "And whatever strikes you of disaster - it is because of what your hands have earned" and "That is because Allah would not change a favor which He had bestowed upon a people until they change what is within themselves." Sins deprive one of sustenance, so a person should review themselves, seek forgiveness, seek Allah's help, persevere, and not succumb to frustration, for Satan and the self call to idleness, and everything of value requires effort.