Are wallets really safe??

I have tremendous trusts on wallets because its math foundation. But today, something happened and I am a little in doubt. Today, when i try to restore my wallet using seed phrase, I accidentally made a mistake, but I ended up restoring another wallet that is not mine. Even though there is no any coin in it, it casts a doubt on wallet’s safety. What if someone who created the wallet has put coins in it? What are the chances that someone else accidentally restore mine?

Just genuinely questions from a long time hodler. I hope I get answers that resolve me concerns