I am new to Pokémon I have a living dex in swsh now when the home released my aim was to complete the National dex but some event/ mythical mond are not allowed to trade currently I have almost 700 unique mons .... but in order to get this mons I understood only way is to have an old game with legacy console play and move them via bank to home ER.. but I cannot do the playing part as I dnt have that kind of time so I have the following question for the best path to get this mons to home
1 , I see some people are selling the relavent cartridges with all mons + event mons on eBay buying this cart + relavent console suffice ?
2. in switch I see that saves are tied to account is that not the case until 3ds if I buy this carts on eBay can I move this mons to my home
3. Is there any other simpler way to get this mythical and event mons like arceus ?
4 if I buy the cart with loaded data my guess is that probably have hacked the cart to load the save so In order for this kind of cart to work Shuld I hack the console as well?
5. if I were to buy this setup what is the best purchase to go with in term of cost I mean like ultra moon + 3ds , Pokémon x with 2ds what is the cheapest method that I can get the legacy mons ?