You should stop making full quotes in your replies as this is in the majority of cases completely unnecessary, annoying and not appreciated in this forum.
I use the Notepad app on my PC to store my secret phrase. I live alone, and no one has been using my PC.
So you store your mnemonic recovery words in digital form on a very likely always online Windows computer which you very likely use for all your daily computer and internet stuff. That's a very very bad thing and not a recommended procedure to safeguard your recovery words. As you're thus very likely no security expert, you can't be confident that your computer isn't compromised. Your recovery words could've been exfiltrated from your device. You can't know it didn't happen.
Mnemonic recovery words should only be stored offline on physical media like paper and/or stamped in metal for water and fire resistance. No online hacker can steal a physical offline copy on paper/metal.
There was an Atomic Walled Support person who helped me create a Cosmostation wallet to transfer my funds, but I never told that person my secret phrase.
You don't go into details here, but let's assume the support person's help didn't fool you and your Cosmostation wallet was safe. I can't say much to this as I've never used such a wallet. I don't trust Atomic Wallet and the people behind it.
Edit:
I never used Cosmostation wallet to be precise. I used Atomic Wallet for a short period in the past to gather fork coins of my older bitcoins to exchange them into the real stuff. I didn't want to trust the Electrum wallet versions of those fork coins (shitcoins for me) for any longer than needed to claim the fork coins. As Atomic Wallet is closed-source I didn't feel very well to use it at all, but there wasn't too much value at stake, so it was convenient for me at least and I took the risk.