Yeah i've read about Buddhism and Christianity and Judaism. I'm still convinced that Islam is the right because it makes sense to me.
Out of all the religions, you studied 4 and concluded Islam is right? What about Jainism and Hinduism? What about all other religions(4200 you said)? Do you see the problem here? We humans don't have enough time to study all religions and follow the right one. Some people even keep studying one religion all their life. How can your God send people to hell for not following his religion when there are so many others?