>> For me it’s very clear from the Torah, that Hashem has no guf.
> Yet the Raavad says that it isn’t. So who should I believe?
Raavad in this case. Sometimes, you need to suspend your current culture when reading old sources. Rambam lives in monotheistic and philosophical Islam era, Rabman in Christian with their own religious claims. Some of the gaonim they are responding to lived in Persian culture … So, what is clear to you, may not be obvious to them. Similarly, what is clear to Rambam, might not have been clear to those gaonim.
Think of any simple theorem you (hopefully) encountered in math and physics – most of them are proved in the textbook in 2 pages, but it took years for original discoveries.