The reason that you resort to using dash attacks and rolls is because you haven't mastered the other techniques to the point that they become as easy as rolling or dash attacking. Not that rolling or dash attacking aren't useful, but lets just say they have their own time and place.
Yes I remember when I first started playing as fox, I would just use the less technical stuff when I find my self either getting to nervous or failing regularly.
The problem is, that falco isn't one of those characters that can be played decent enough without much technical skill. Fox for example, can do well with easy stuff like up-tilts, chain grabbing, upthrow, uair, up smashes, shine spikes, it takes less skill to do those, on the other hand falco can't do well without the much needed wavedash and shfflc.
Anyway, you wouldn't be asking this question unless you didn't mind camping lasers and forward smashes all day on FD, so my advice to you is try to resort on the easier things at first, get your laser game down, at least short hopped laser and reverse, some dash dancing in between, and your L-cancel so you can at least do some simple pillar: full jump or double jump into dair, hit L or R when you get close to the ground and shine then jump again and repeat.
Once you get used to do the wavedash and shfflc you can try incorporating them into your playing, you really need to force yourself to this stuff because that's how you get combos going, and combos are much better than rolling and dash attacking.
