Hi everyone, I am looking for this font I saw in a magazine. I tried to find it with Font Genius or on myfonts.com, but I never got the right one. Please someone help me! Thank you guys!

Thank you, I just moved up the post. About the magazine, I just do not remember, it was a long time ago. It was just for an article or something, but not the official type of the magazine. I did a scan of it, and now that I look at it again, I'd like to do something with this type if possible... Thank you in advance for your help.
It really looks like it is part of Peignot family (even if it is a mix with lowercase), but some things are different, like the R or the S (its curves), and every thin lines or curves are even thiner than in the Peignot light. I do not have the specific "Peignot demi-bold" but when I check on internet, the letters have the same shapes as Peignot light, demi or bold... :(
Your sample image is a combination of upper and lower case, resized to the same height. It may also have had some individual letters' weights altered. Or, it's possible (I think unlikely, but would be glad to be wrong) that a matching font exists.
There are many different implementations of Cassandre's 1937 Peignot, and some foundries have created more than one version. There are many variations, both subtle and major, among these designs; for instance, some have a rounded lower case 'w' and some have sharp connections. They include:
Adobe (multiple)
Berthold
Font Company
George Williams
Linotype (multiple)
SWFTE (a clone-maker)
URW (multiple, including a set that also has Microsoft as a copyright owner)
Numerous implementations that don't include any creator's names
And there are implementations with different names:
Exotic 350 (Bitstream)
Greyhound (B&P Graphics / Softmaker)
MontereyFLF (Casady & Greene)
Morris (Opti/Castcraft)
Pare (Bay Animation - distributed with Broderbund products))
PeignotNeu (Watanabe)
Penguin (Corel - may be renamed from URW or Bitstream)
Pennsy (Primafont)
Penultimate (FontBank)
Penwin (SWFTE)
Penyae (WSI - probably a clone)
Peoria (Softmaker)
An assortment of Southern Software ripoffs (Carnati, Creme, Jabot, Paquette)
Captured from web.archive.org on 4 Aug 2014. view this capture