Hello Dear,

there are many youtube channels are present, they teach very well. some are:

• Khan Academy (sufficient enough) Khan Academy
• m learning by Gupta Tutorials Indore mlearning India
• etoos academy {lectures by Nitin Vijay sir, prince sir, Dwivedi sir, Chouhan sir etc. are very well enough)
• Etoos Education
• Aakash iTutor
• collegepedia.in
• physics by bm Sharma IITJEE Physics Video-Lectures
• the channel of pace IITJEE PACE IIT & MEDICAL

good luck