Does artificial rainmaking affect the validity of Quranic verses such as: (And He sends down the rain) and (Is it you who cause it to descend from the clouds, or are We the Cause?) And does this mean that Islam is an invalid religion?

This question about "artificial rain" is not new, and relying on it as a means to alter faith is an exaggeration. Modern cloud-seeding technologies, despite their advancement, have not been able to revive dead lands or extinguish the major fires caused by drought. This confirms that these technologies do not go beyond the scope of the means that Allah has created in the universe.

Quranic verses, such as the Almighty's saying: ﴿Have you seen what you sow? Is it you who makes it grow, or are We the grower? If We willed, We could make it [dry] debris, and you would remain in wonder﴾ [Al-Waqi'ah: 63-65], confirm that Allah is the true planter and the grower of everything. Even if humans could bring down rain, Allah is the one who possesses all command, and He is capable of making it bitter (unfit for drinking).

The distress felt by the questioner stems from being distant from Allah, and the solution lies in returning to Islam, sincere repentance, and fleeing to Allah. It is recommended to start by reading the Holy Quran and pondering its verses, especially Surat Al-Fatiha, Ar-Ra'd, Fatir, Ya-Sin, Al-Waqi'ah, Al-An'am, An-Nahl, and An-Naml, for they are the best cure and reassurance for hearts. The remembrance of Allah and the Quran are the only way out of this distress.