1 - well, that's usually the case, yeah but the problem at lower levels is that you can't really sell the company very quickly due to not maxed decorations.
2 - at the start it's pretty normal, yeah.. you just need to be lucky and get the key drop chance deco and they will fly from all over the place.
3 - eh, idk.. I just wrote auto clicker in google and I am keeping at 50 clicks cuz otherwise the game detects that you are clicking too fast and ends up crashing
4 - that's actually Ms. Rider I believe (the teacher)
Overall, once I got to like level 17 I think and unlocked some of the important decorations, game speeds up pretty quickly.. I am at level 117 right now (I could be way higher, I am just lazy to farm
) cuz I can literally sell the company in a minute and repeat, just keep going.. first few levels are slow