@gvidapri wrote:
Im sorry, but im just basically self taught when it comes to fusion, ive never been told the "proper" way of working with the program ... do you have any tips on how to have a less messy project?
There are so many resources available to learn Fusion 360 from.
Some of them right from within Fusion 360:

The self-paced learning section contains several courses that should get you started on the right foot.
I would say, however, the first thing you should understand is the difference between components and bodies. Then you should also take a look at Fusion 360 R.U.L.E #1 & 2.
I wonder how much good hat is going to do because you already have ignored a suggestion from me twice (remove objects). I know that this works!
@gvidapri wrote:
...The problem is that hiding the components isnt working, even though hidden, it still shows up in the render.
When I hide the three "Bańo" objects in. your design, they also don't render.

When I unhide one of them, only that one appears in the render.

I note that you have yet to post any of the renders you are concerned with!
Edit: Scratch that. You did provide renders in your first post. My bad!
@gvidapri wrote:
Apparently, working on a linked component creates problems, as in, for example, creating a sketch on the surface of the linked component. What happened here is that ..
You violated one of Fusion 360/s timeline dependencies.
It then provided you with a warning:

and colored the respective icon in the timeline:

You chose not to respond to that and continued in your design process.
You should have immediately addressed that error!
Again, there is nothing wrong with Fusion 360 pertaining to this design.
A couple more tips:
1. Stay away from the translucent plastics in the Appearance materials. The slow-down rendering considerably!
2. Don't use that large emitter to emulate a distant sun or light source. That also slows down rendering. It is better to find a suitable HDRI (polyhaven.com)and plug hat into the rendering environment.
@gvidapri wrote:
...
Im sorry for having you deal with this mess...
No worries! Once you've figured out how to better organize a project and use the appropriate tools I think you'll see how much faster you will be able to work because navigating a design is going to be so much easier.