i recently upgraded to th8(maxed 7) but i cant get enough loot for expensive upgrades, in th7 i used to get about 2millions a day with HealerGiant or ArchBarb, nut now i cant find good villages to raid.
1 - what defenses are more necessary to upgrade?
Splash defenses first - mortars and wizard towers, then slowly chip away at air def, arch, cannons, and tesla.
2 - what league is the best for me?
Depends on what you want to do...farming (1500-1700 range you'll get easy TH 7)
3 - i have 2 dark barracks lvl2 should i upgrade to lvl4?
No.
IMO, hogs and minions are what u need to focus on now.
4 - your strategy? (200 camp space)
My farming army (by farming I mean usually just go for full collectors). My army cost is ~55k Elixir and I easily average total loot 400k:
3 L4 WBS (7500)
9 L5 giants (22500)
15 goblins (1000)
35 L5 arch (7000)
35 L5 barb (3500)
1 healer (6000)
total: 56500
BACKUP Troops and spells for huge loot bases:
2 L3 dragons (72k)
3 L4 healing spells (60k)
If I find a very good loot base (600k+), I will use a dragon and 1-2 heal spells. 