how to print in PETG on Ender V3 3 SE

I use Ultimaker Cura and the lines around the prints come out well, but the rest does not.

Hello Louuh_Diaz and welcome.

Have a read of this article as it may be of help.

Cheers.

https://all3dp.com/2/petg-print-settings-how-to-find-the-best-settings-for-petg/