If your deck is strong against Mono-Red and you face that archetype three or four times, which is entirely possible in Pauper due to the format's nature, your results may not fully represent your deck's overall performance
Theres a lot of dice rolling involved
Theres also the ever-helpful Hour of Reckoning, which is a great way to clear your opponents boards while keeping yours intact
There are only four of these on TCGPlayer but you might be able to find some cheaper elsewhere in the US that being said, if you have access to Europe then these are a slam dunk at 20
You'll surely see Ragavan, Nimble Pilferer , but beyond that you might catch these 2 red cards
Boartusk Liege gives +1/+1 each to mono-green and mono-red creatures, and +2/+2 to RG+ creatures