How to Factory Reset iPhone 6 without Apple ID password?

Now, I am wondering if there is any way to reset my iPhone 6 to its original factory settings without Apple ID password. I want to get rid of all my data, applications, and accounts associated with my iPhone. I tried to explore different options, but I am not sure which one to trust. I have already consulted with several people, but they could not offer me any concrete solutions.

So I thought of asking for help on this forum. I hope that someone can help me out or provide some useful advice so I can successfully factory reset my iPhone 6. Thank you in advance.