What is the ruling on frequently missing Fajr prayer due to sleep, and are the measures taken to wake up sufficient to lift the sin, and what is the solution to this problem?

The questioner must realize that he is aware of his own situation, and that the measures he takes to wake up for Fajr prayer are insufficient. These include sleeping late, which is forbidden, and going back to sleep after waking up at prayer time, which is a dereliction of duty for which he is sinful if he knows he will not wake up in time.