I'm surprised you still use it despite knowing its closed sourced or maybe it's used for Pocket change
Still don't see how that is any different from using CEX.
What I mean is I did use it for quite some time. I don't know how long but I remember I used it for months or more than a year K think and never experienced any problems or issues but in my opinion, it is better than storing your crypto in a custodial wallet or in an exchange platform. Anyway, that was before when I still use trustwallet but after that is I am using electrum wallet.