What if cold wallet terrifies me?

What if I lose my keys, what if my hard wallet is tampered or something strange… When I was at coinbase I was in peace, how comes now I’m so terrified? I bought a Jade walled, it was plastic sealed and both seals at the box seemed uncut, but I bet anyone can open it and reseal if he wants to. I made a 12word wallet + passphrase + jade pin + 2FA

Transfered 5$ from coinbase to test it. Reseted Jade Wallet. Set up the wallet again on Jade to see how it works and to ser if the 5$ were still there. Transfered that 5$ back to Coinbase.

And now I’m terrified to send 100% of my bitcoin from coinbase to the jade.

Is there any way to know if my Jade has been modified, tampered or whatever?

I know how to keep my seed secure but what terrifies me is the jade itself, I feel more secure even with green hot wallet :(