You are on the right path, so keep it up.

+1 for Mycelium from me as well.  Mycelium has a very basic looking yet intuitive user interface.  Open source, non custodial.. whatever you will.  Always choose more important features over design.

As long as you are saying the price of a Hardware Wallet is too expensive at the moment, I assume you do not have or plan to invest that much into cryptocurrencies.  In this situation, purchasing a Hardware Wallet does not make much sense to me.  If I were to suggest an amount of Bitcoin you're holding starting from which purchasing a Trezor is worth it, it would probably be $500.

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Regards,
PrivacyG