Assalmwaalykum warrahmattulih WA barakatuh.
May Allah bless you.
It is not true that Prophet Mohammed founded any religion. He restored the religion of Prophet Abraham(Prophet Ibrahim). The Arabs at that time had forgotten the belief of Prophet Abraham and believed many gods. After Prophet Mohammed preached their ancient faith the Arabs accepted the faith of their forefathers and rose up with vigour. Prophet Mohammed was the last prophet.
Islam is the religion worshiped by Muslims
Muslims are practitioners of the religion called "Islam".
Muslims are followers of Islam religion. Refer to question below.
Because their religion is the true religion and they want non-Muslims to realise that their religion is not right, and the Muslims want them to convert and have a better life
to Islam religion
Islam is the religion and Muslims are the followers of the Islam religion.
They practice Islam religion.
Muslims is the Arabic word for people who follow the religion of Islam.
Islam
Islam is the religion. Muslims are the people to practice/follow the religion of Islam.
No they are not. There are many religions, so you can certainly assume that a baby is, or will be, the religion that their family practices.
They learn their religion from the Qur'an.