Allo there,
Getting kicked from the raid won't stop you getting future loot. Unfortunately it's all down to RNG and even at 50% you'd still likely get no exotic launcher as that is the nature of RNG. We don't know the increase in odds per run so could be lower then 1% so all you can do is keep trying.
English
-
well I better not play lotto any time soon then :) thanks for answering