Legacy loot mode in BfA should improve solo chances a bit :
Once these updates are implemented, entering a dungeon or raid that is trivial for you (i.e.: your character is 10 or more levels higher than the dungeon or raid’s intended level) will activate a “legacy loot mode.” That loot mode will work like this:
The number of items dropped by bosses will be the same as it would have been if you were in a full party. So if you’re in a 5-player dungeon, you’ll get 5 players’ worth of loot.
For raids with a flexible raid size (such as Raid Finder), this will act as though there were 20 players in the raid.
All items on the loot table will have a chance to drop, not just the ones that are designated for your spec.