Hey!! It will be more helpful if you tell which part of india you wants go. you also know India is full of relgious places , It depends on you which location you want visit.
If you are living in Mumbai region then sai shirdi , sani singapur , triambkeshwar are some places you can look for.
In most southern part, there lot of very beautiful and very famous temples like sun temple , Meenakshi temple , you can go for them.
In Rajasthan area , you can look for nathdwara temple.
and most importantly North includes enormous number of holy places like rishikesh , kedarnath , har ki podi , vaishno Devi temple , Varanasi etc
All the best for your journey!!😀