Main problem of many players is that they can't find a good league for loot. So today i will help you.
You can find many dead bases from 1100-1600 trophies so try to maintain your trophies between this range. When I was TH8 I used to farm in Silver and Gold league. I assure you that these leagues will give you best loot for upgrading your village.
If you are TH9 you can find a lot of dead baes from 1800- 2400 trophies. Try to maintaing your trophies between this range. Gold League I and crystal league will fill your storages quickly.
At TH10 your trophies should be between 2100-2800 trophies. I used to farm in this trophy range with my mini account. You can find a dead base here in just 3 or 4 searches.
That was a short and simple guide. Clash On!