Help in Battlegrounds

I just reached Uru and for past 2 hours I lost every match i.e. 21 matchups in a row. I am returning player and at Paragon level at present. Don’t know how to proceed. Matchups are very tough and usually all of them were Valiant with stacked battle deck.
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Comments
Some are quite large, as not every valiant is going to grind out GC. I play 3 matches every other day. The radiance differences just don’t matter that much if I tried to max out my potential (which has a definitive ceiling) and I don’t like battlegrounds THAT much. You just have to learn to accept your limits in that mode.
I know — it's a skill issue, a roster issue, and a little spender issue. But I believe that 95% of players are probably in the same situation as I am.