Newer player 👋

Hey all. I’m pretty new to MTG, I understand how to play it (mostly), but I’m struggling with my decks.

I play mainly swamp decks. I like the rats and have come up with a deck that mainly focuses on making you discard your hand, and then penalizes you for not having cards (bandits talent). A few days ago I won like 14 games in a row. Now? None. I’m getting wrecked. Is there something I’m missing? It seems like I’m going against a lot of people playing red decks that just spawn 20 goblins and then kill me instantly with raid bombardment.

What is a good amount of spells/creature ratio? I appreciate any info you guys could supply me. Thanks!