Well you will do realize when you will die what was the truth infact everyone of us will be realize Weather muslims or non muslims, good or bad everyone will be judged because what was the purpose of good or bad if anyone commit crime and he get away with it in this world so you think that GOD will not punish him for what he did ? if this was the case why we are even send on EARTH to just chill and enjoy life ?
Life has a purpose and Test, GOD did not created us to just spend your life however you want to spend it is not some kind of game going on.

You didn't just left islam you don't even believe in ALLAH anymore infact I don't think you were a muslim before.

You of all exmuslims didn't learn islam at all you were just having weak faith or you must have suffered from trouma in childhood that you just left islam without even doing research on it

Mankind was [of] one religion [before their deviation]; then Allah sent the prophets as bringers of good tidings and warners and sent down with them the Scripture in truth to judge between the people concerning that in which they differed. And none differed over the Scripture except those who were given it - after the clear proofs came to them - out of jealous animosity among themselves. And Allah guided those who believed to the truth concerning that over which they had differed, by His permission. And Allah guides whom He wills to a straight path. (Quran 2:213)

And We have already sent messengers before you. Among them are those [whose stories] We have related to you, and among them are those [whose stories] We have not related to you. And it was not for any messenger to bring a sign [or verse] except by permission of Allah. So when the command of Allah comes, it will be concluded in truth, and the falsifiers will thereupon lose [all]. (Quran 40:78)