Looking on the internet deeply has found these results:

at the end is the most popular phrase on the web.

by the end 1957,000,000 results on the web	at the end 11,790,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
He was pretty paranoid by the end. Was no party by the end. No, I didn't love him by the end. Funny, you know he'd almost won them round by the end. Besides, you may have won it all back by the end. But by the end, she was asking me if I knew any good divorce lawyers. And by the end, I was just making smoothies. So you draw a line from there to the other planets, and I think by the end, we all learned a little bit about how small we are.	Especially the vanilla flower at the end. Always a death at the end. Bruno Giussani: Rory, you mentioned Libya at the end. There at the end, we'll build the storage units. Your announcement is at the end. And at the end, they went crazy, clapping. Just right at the end, there. I just forgot at the end.

by the end

1957,000,000 results on the web

at the end

11,790,000,000 results on the web

More popular!

He was pretty paranoid by the end.
Was no party by the end.
No, I didn't love him by the end.
Funny, you know he'd almost won them round by the end.
Besides, you may have won it all back by the end.
But by the end, she was asking me if I knew any good divorce lawyers.
And by the end, I was just making smoothies.
So you draw a line from there to the other planets, and I think by the end, we all learned a little bit about how small we are.