How can one overcome the problem of being unable to wake up for Fajr prayer, taking into account multiple attempts such as performing ablution and reciting the Qur'an before sleep, and asking a friend for help to wake up, but all to no avail?

The Fajr prayer deserves care and attention. Allah has specifically mentioned it in the Quran, and some scholars have gone as far as to say that it is "the middle prayer." Among the most important things that help in performing it are increasing faith and frequently supplicating after the obligatory prayers with the well-known supplication: "O Allah, help me to remember You, to be grateful to You, and to worship You in an excellent manner." Material means can also be used, such as a loud alarm clock, and advising someone who wakes you up not to leave you until you perform ablution.