Why should you use a Trust wallet when a wallet similar to the Trust wallet that supports more coins such as the Unstoppable wallet is better to use.
Unstoppable wallet open source. The features are many. No matter how good a wallet like unstoppable is, it is categorized as a less secure wallet because it still has access to the internet.
I also wonder why beginners easily go to trust wallets instead of doing research to know how good and reputable the wallet is before attempting to use it. At least it is part of learning before investing, which we expect newbies to have gone through before making any wrong move in cryptocurrency that may likely lead them to losing their money to scammers.
I am not saying that TrustWallet is not good, but it is a closed-source wallet that is easily manipulatable; one can use an unstopable wallet as you suggested; it supports several altcoins; and it is more secure than TrustWallet.
If a newbie wants to hold Bitcoin, I will recommend electrum wallet because it is user friendly and has good features. Although it is also connected to internet but it is more secure and reliable since several people have used it and have testified here in the forum.