If you can't keep your wallet's seed phrase safe, your bitcoins won't be safe. I use Trust Wallet and I use Electrum. However, no wallet is secure if the seed phrase is not secure, no matter how good a wallet one uses.
Still using a closed source wallet until now is not a good choice even with Electrum. I think you don't put Bitcoin in Trust Wallet but use it as a wallet to store coins and tokens. Even so, be careful for the security of your assets even though you keep your seed phrase well. In addition to keeping your seed phrase well, making sure not to be connected to the internet is an important thing that should not be ignored.