The whole world will let you down, absolutely everyone will let you down but Allah will not.
Allah says He will forgive us even if our sins were as great as the seven heavens and the earth, if we ask for forgiveness. If your sins were to fill from the earth to the sky on the day of judgement, but you did not associate partners with Allah, you at least tried then Allah can forgive you. Shaytan deceived us to doubt Allahs mercy. Allah is the loving, the most merciful, the most compassionate. When we say Bismillahi Ar Rahman Ar Raheem. Allah chose these 2 ultimate names for us to continue to repeat – the most merciful, and the specialised mercy you feel if you are a true believer.
When natural disasters or the like happen we think “Allah is punishing us” but it is not always the case that it is a punishment, what about those who died while in sujood? what about those who died who were good people. It was the mercy of Allah that they died in a good condition. If Allah takes you away in sujood, it is a blessing of Allah.