Why am I not getting credited for the level?

You won't get levels for games which you got free. (These games are marked as ** when you create giveaway)

Private/Group giveaway with less then 5 participents does not give level points.
And Some games on this website are marked as NO VALUE, so they will not add to your level.

You didn't read the F.A.Q.

https://www.steamgifts.com/about/faq
Check these headings:
What is contributor value?
What are "No Value", "Reduced Value", and "Full Value" giveaways? How do they affect my overall contributor value?

Essentially you need at least 5 entries to a giveaway, and when you create a giveaway you can see whether it is full, reduced or no value with the symbols '**'.

five entries are needed to count for games marked with 0 star to get full CV and 1 star is worth 15% value
two stared are considered free and not worth any CV

You will get level 1 when you current giveaway has ended and been marked received

https://www.sgtools.info/sent/OwalGlobu
Here's you can see the breakdown of your contribution value, and the reason each game you gave away contributed nothing to your level.

when you tryin to game the system and the system games you

They're not worth 35$...
Also if you give away bundled or free games that aren't yet market Reduced or No CV, you will lose your level eventually too.