1. I don't really believe in trust wallet, because it was developed by Binance and we can't even access the private key.  Maybe for small assets, there is still good to use it, but for large amounts it is not recommended.  Indeed, the documentation says that they don't have access to our account and don't store our wallet data, but we don't know what's going on behind the scenes.  Many people say they have access to our wallets, but I can't confirm it and that makes me doubt it.  As far as I can see, Trust Wallet is a good one with its multi wallet feature.  Just the issue that I mentioned above makes me a little wary.

2. Yes I do. In 2017, I use MEW web to create an ETH wallet.  But now WEW web no longer supports creating a new wallet there.  So now I have to try the MEW app, and I don't really like it because access to the private key is protected.  I also use ImToken around 2018, but I stopped using it after the hacked incident around 2018. Now I use Metamask and I feel comfortable there.

3. I don't think I need it now.  I think it would be very useful if I had a lot of assets.