I need little help. Pkhex (trade,union circle,tera raid,mystery gift)

[Lucario10]

Hello, I hope all is well with you dear Pokémon fans..

Firstly, I want to apologize if this is not the right place to ask these questions and sorry because my english is not perfect.

I finished Pokémon Violet and the two dlc's.

I think I did almost everything I had to do, I explored, fought and unlocked everything I captured everything I could capture (I just didn't have the patience to have all of Alcremie's forms and get the shinys from each Pokémon).
But since I have a pirated Switch, I can't trade online, use the Union Circle or have event Pokémon.

Here are my questions:
- Can you help me better understand what I should do when using pkhex?
- Will Pokémon just appear in my box? Or, for example, will I actually be able to fight event Pokémon in third raids? And will the Union Circle Pokemon appear in my box with the "Union Circle" tag?
- And do Pokémon that were offered a mystery gift appear in the box or do I actually receive a gift?
- What programs, or what folder should I move to on the Nintendo Switch?

I remember using pkhex with the 3ds for several years, but then I didn't use it for many years, hence my doubts.
I remember that in 3ds we could do events ourselves, for example Arceus where we received the azure flute, or other events where we received a ticket to an island.

That's what I want. I don't just want to have the Pokemons in the box when I turn on the game.

Another question, I read some people complaining about some problems with the game after using pkhex. Still not 100%? Is it preferable to only use it after DLC part 3?

Thanks. If you don't want to explain, but if you know a place where it explains everything, step by step, I would be very grateful, so I can read it and try to understand it better.

Happy Holidays!