What is the ruling on reciting the Qur’an with the intention of facilitating matters, achieving excellence, and gainingفضل (divine grace) before studying, and what is the ruling on advising others to do so? Is sharing one's personal experience in this regard considered showing off (riya’) and therefore forbidden?

There is no harm in reciting the Holy Qur’an to seek blessings and facilitate matters, for the entire Qur’an is goodness, blessings, and healing, as Allah the Almighty said: "And this is a Book which We have sent down, blessed and मुबारक. So follow it and fear Allah that you may receive mercy." and "And We send down from the Qur’an that which is a healing and a mercy to those who believe." Surat Al-Baqarah has a special status and virtue in bringing about blessings and expelling devils. The Prophet, peace and blessings be upon him, said: "Recite Surat Al-Baqarah, for taking it is a blessing, and forsaking it is a sorrow, and the sorcerers cannot stand against it." Regular recitation of it brings about blessings, and it is not a condition to recite it every day. There is no harm in sharing your experience with Surat Al-Baqarah to motivate others, and this is not considered showing off if the intention is purely for the sake of Allah the Almighty. It is preferred to keep the person being spoken about vague to ensure sincerity.