Can someone help me?

I'm playing Pokémon Sword for the second time. The first time I didn't get that far, I just played to test it out. To my surprise, I found 2 Squirtles on route 2. I tried to find out if it was normal and I saw that it wasn't, but I couldn't find the reason why it happened. Another detail was that I also found another starter, a Sobble, even though I started with a Scorbunny. PS.: The only MOD made to the game was the translation into PT-BR.