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Most likely, these are from your Angelfish as GBRs usually lay smaller amounts of eggs and do it in a more concealed area.
Unfortunately, the white eggs are dead eggs. If you only have 1 Angelfish, there's nothing you can do as they need a male and female to produce and fertilize viable eggs. Single females are known to just lay eggs but nothing can ever come of this. These will just be a good snack for your other fish.