>>719873385
The "normal" way is more or less to play like
>>719873569
Engage a bit with all of the systems to fortify your junctions as needed, because barring exceptions raw level ups and regular grinding don't amount to much.
I think the problem is the game doesn't tell your very well that the card game is a very good alternative and drawing stuff to 100 isn't the best way to stockpile magic. The problem is it's still a card game and not everyone playing a jrpg/ff might want to try it.
Also gamers are autists so the idea of casting 2 or 3 spells from your stack of 100 Junctioned Firaga at a trade-off of a 0,01% power down in your stat is too much for them so they never use any.