Love the game, but it has its issues

I have been playing at the end of the month of the global launch. I have reached the old legendary arena, but have encountered a few major problems with the game.

1.Cards that still need a nerf
Royal Giant: The thing about royal giant is that his range is incredible and he targets buildings. This means he will target buildings and towers from a far distance, which means he can just start attacking from a far distance combine this with the fact he can easily be leveled up and his high dps he can take the tower quickly and to top it of he has a lot of health. Royal Giant needs a nerf in his health and damage or he could become 7 elixir because he is already better then most 7 elixer ground tanks (PEKKA),.
Elite Barbarians: These cards dont need a major nerf they just need to have less health. They are very hard to deal with if rushed at with and do major damage to this that counter it. Also combined with any splash spell like the log it would be even more harder to counter them and you might possibly lose a tower.
Graveyard: This card like elite Barbarians is also hard to counter. Its old hard counter archers dont works as good because of the new ai change. Which makes this card even harder to deal. Combine this with the fact that it is very had to zap or arrow it it destroyers people who dont have the right cards.
Hog Rider: This card needs a small damage nerf, because for a 4 elixir card it does massive damage and it targets buildings. To top it off it is fast and is 4 elixir. It can almost take a tower by itself and it does around 300 damage at higher lv.
2. Another problem with the game is the matchmaking. I was using this deck for a long time and then all of a sudden every person could counter it. If you wait a few days nobody can counter it. This is very flawed because it makes it even harder to push trophies.
This is my list so far thank you for your time reading it.

DiamondCreepe44 about Clash Royale, v1.8.1