Hi @nicolasf.j0fvp8 and welcome to the Member Community. If you are talking about items 1 & 2 in this screenshot, the answer is yes you can remove them. They are widgets.
On our Moto G6 we just long press and hold the widget. A small x with the word Remove pops up at the top of the screen. Just drag and drop the widget on the remove and it’s gone. Just make sure it says Remove and not Uninstall. You can always re-install the widgets too.
We find the google bar very helpful not just for data searches. You can tap the little microphone at the end of the bar and say things like “Set timer for 2 minutes” and the system sets a timer for you. Might want to play a little and see if you find this helpful.
As far as the clock…it’s one of the most used parts of our home screen. But that’s the great thing about smart phones you can individualize them to suit your needs
Hope this helps!