If you can't get a hard wallet, then continue with trust wallet, it's cool and also mobile, and if you are thinking about crash of your phone,that shouldn't be a problem, once the wallet is created, keep your mnemonic phrase safe and any day you can always access your wallet through it.
Good point, keeping the mnemonic phrase safe is the most important aspect of security, since without it you don't own the wallet if the device it's installed get lost. Trust wallet is trustworthy, but we need to do our own part to foster security. The fact that Binance acquired trust wallet is enough reason to say its highly reputable and also secure.