TTFB is so high!

How can I TTFB time? it really looks too much, my web page is very slow. And when I want to go to the address, first I wait then the page comes all. How can I reduce this waiting time? I am a beginner, please make simple explanations Thank you.

Isn’t that depends more on your host

I use VPS, I think it is enough for only one website. 4 gb ram and 2 cpu. there must be something I miss…

@fadosolrelamisi , Please share more info. I try to help you.