God calls on us to acknowledge Him through His signs. God has made it our responsibility to recognise Him. This is part of the test of this life. Without the right attitude, no amount of information can make someone believe.
✔ Objectivity & an open mind
✖ Preconceived barriers/misconceptions to not believe
✔ Humbleness & sincerity
✖ Pride & arrogance
✔ Contemplation about our purpose
✖ Focus only on material world
✔ Receptive to God’s signs
✖ Dismiss everything as meaningless

Reason 1: Beginning of the Universe
The first reason for believing in God relates to reflecting on the origin of the universe.
How did the universe come to exist?
✖ Did it come from nothing? From nothing, comes nothing. So, obviously not.
✖ Did it create itself? No, this is irrational. It is like saying a mother gave birth to herself.
✖ Has it always existed? No, modern science concludes that the universe is not eternal and had a beginning.
✔ Was it created? Yes. Muslims believe something beyond the universe created it — The Creator.

But who created God?
God was not created. Unlike the universe and the rest of creation, God is eternal, has always existed and has no beginning.

Reason 2: Order of the Universe
Another simple reason for believing in God is by pondering over the order of the universe using the following logic:
+Anything that is ordered indicates intelligence
+Our solar system is highly ordered with intricate systems, laws & patterns
+The order in our universe indicates the intelligence of the Creator!

Many features in the universe clearly indicate it to be specially designed to support life. If these measurements were slightly different to what they currently are, life could not exist. Examples below.
+Ozone Layer
+Thickness of earth’s crust
+Oxygen % in the air
+Distance from sun
+Relative size of sun, earth & moon

Could a large complex universe form by coincidence, without supervision? It should be noted that Islam encourages scientific research and reflection. The role of science helps us describe the many observed patterns that God places in His creation and appreciate the extent of His power and wisdom.

Reason 3: Revelation — Quran
The Quran provides a strong argument for the existence of God and it is unmatched in its style, wisdom, guidance, eloquence as well as its uniqueness in how it addresses the reader.
There are signs on earth for those with sure faith, And in yourselves. Do you not see? -Quran 51:20–21

NOTHING will make the atheists believe.
NOTHING is the evidence they need.
NOTHING cannot create something or anything.

Something like our Universe exists.

🅰️ universe either has always been in existence or
🅱️ it came into existence

There are valid reasons not to believe in 🅰️.
🅱️ implies something originated it.

Reflect on the Qur’anic ayah:

أَمْ خُلِقُوا مِنْ غَيْرِ شَيْءٍ أَمْ هُمُ الْخَالِقُونَ
أَمْ خَلَقُوا السَّمَاوَاتِ وَالْأَرْضَ بَل لَّا يُوقِنُونَ
Were they created by nothing, or were they themselves the creators? Or did they create the heavens and the earth? Nay, but they have no firm Belief.
-Quran 52:35–36

sources:
-Islamic Pamphlets
http://islamicpamphlets.com/introduction-to-islam

-@MansurXAhmed
https://twitter.com/MansurXAhmed/status/1163924594035757056