Assalamu alaikim wa rahmatu Allah wa barakatu
Dear sister, Islam wa revealed to prophet Mohammad salla Allah alaihi wa sallam to make hearts of people submit to Allah the one and only creator of Allah ....the prophet salla Allah alai hi wa sallam taught people to be sincere in worshiping Allah , taught to call him alone , to love the creator the most love with deep humility , to depend on him.......if you study Quran you find it purity hearts, and bring them closer to Allah subhanahu wa taaala. Do you this that shaitan will stay away ? For sure no, it is his job to keep people away from the one who created........
I think all that make our hearts blocked from sincere faith, is false .......yes shaitan wants to ruin Islam in hearts of people , put doubts about the words of Allah (Quran) ..........this is his Job ......we should be very careful .........after we tasted the sweatness of faith and after we came near to our creator by sincere worship .........let us keep our hearts clear pure and follow our prophet salla Allah alaihi wa sallam and his companions .
This kind of sects are trying to ruin our deen , by lies , doubts and shirk .we should be careful. They don't care about sincerity which is the most important concept of Islam .