You should watch:
Tokyo Ghouls
Kakegurui
ONE PIECE
Haikyuu
The Disastrous Life Of Saiki K (both the original and reawakened)
Dororo
The Seven Deadly Sins
HunterxHunter
Backyard gardens seems a bit broad whereas the rest focus in on a certain subject relating to gardens.
The initial results seemed promising, but the final effects were kind of disappointing.
In the given sentence above, the unnecessary qualifier that needs to be removed is "kind of". It is an informal expression which is usually used as meaningless fillers. So, the final sentence will be:
The initial results seemed promising, but the final effects were disappointing.
Ethos.
As in appeal to ethics. It can't be logos because that is for logic and the other because those are literary devices, not appeals.