skype might be better for this since u asked a lot of questions
in general...
fox is tough, tbh ur just losing from lack of practice probably, but wd back couldn't hurt
the peach guide by idea is really good on the first page
its personal preference, but i like dreamland, i think mango or hbox said... u both live forever, but u have a rest
recovering low is just kinda about getting higher like you said, no one is super comfortable low, try to recover far away form the stage though, don't need to hug the wall for any reason, and it just makes shine gimps a threat (because of bounce off wall, whereas a shine far offstage will let you sdi it up pretty easily, plus they won't be able to follow up well because you are so far)
they probably just didn't punish idea cuz they are just scared... people will just give puff the ledge in tourney for free a lot because they just like not learning mixups and just being safe and lazy
my guide is godlike and imma update it soon