Can we change the price on single product page and send it to on cart page

Hello,
Please let me know , I changed the price on the single product page but on the cart page price goes which is set for the product on the backend. I want a custom field on the single product page where user set the price of the product and the entered price on the text field goes to cart and checkout. if you have solution of it, Please help me.
Thanks

Yes, You can change the price of a single product page, Now your view is to send that page to cart page.
Please provide me your Site your Exact Screenshots of what do you want.
Thank you.

Hello Shopify,

Thanks for your reply back, I want this work to do custom not using any app
or anything, I do not want to send to cart product original price which is
set in the admin side, I only want to send to cart which is entered by
customer on front product page in the box.

I want a $20 price on the cart, not the $100. Please let me know about it.

Let me send you my screenshot.

Thanks