Why is SVG graphic distorted when transferring shapes from Photoshop?

Question

SVG

I drew a site layout in Photoshop, now some objects (shapes) need to be transferred to a vector.
Is it real at all?
Now I have voooot such nonsense is happening.

The most important thing is that Illustrator normally opens PSD, but it saves terribly.
What am I doing wrong? I am not a designer, I draw a template for myself.

Answer 1

https://www.youtube.com/watch?v=YqdQrTPsUeE

Answer 2

most likely, because the raster icons are of insufficient quality ... it happened to me