Actually a really difficult question as very much about the childhood depends on adults (parents, teachers, ...) around you.
Maybe this one: "The whole bullying situation will not change until you leave school. Convince your parents to let you change schools."
I did that years ago and then kept fiddling with the lfs subvolume sizes. I see absolutely no advantages to make things more complicated than needed.
One small /boot which is also my EFI system partition.
And a partition for / which covers all the rest of the drive.
Partitioning only limits flexibility. At some time you will regret your choice of partition sizes.
Card whenever possible. Faster and more secure in almost every aspect.
Germany
At first: In most cases you don't need and don't want one.
I wanted to get one as I have several old (over two decades and more) Windows game CDs that I've bought long before switching to Linux. Back in the days it was actually a thing that sometimes malware slipped into professionally pressed CDs (especially on discs that came with PC game magazines or cheap game collection boxes).
For this case (Windows software check before attempting to run with wine) I can recommend ClamAV. It is open source and available on probably every distribution. But there is no need to attempt having it running all the time. I just run scans from the terminal whenever needed.
Difficult. Every time I thought "don't support Amazon this time, buy from this small webshop" I was disappointed.
The problem is that smaller shops often really suck with customer care. When buying from smaller businesses, I now always want some "big business" (Amazon or eBay) in between. Way easier to get support this way.
Python. Works for nearly everything I need. I mostly write small helper tools (most of them shared under a FOSS license) and for my job, I developed a backend API server which sits behind a web application. I also use Python for scientific math stuff as nearly every Matlab also exists for Python.
I did use Perl a lot before but in my opinion Python took over the role of Perl. I loved Perl for having a module for just about everything but nowadays most Perl modules are unmaintained and you find the "good stuff" for Python.
Having a conductor with zero resistance allows to transmit (regenerative) power from where it can be generated for free (solar in the desert) all across to where it is needed without loosing any power on this way.
You want to get into microcontroller programming somehow. The Raspberry Pi Pico may be a good target to start with. The documentation is well made and you have the choice to either use C++ or Python for programming.