And if there is, I'd love it if the senior members could assist me with it. It seems to me that utilising the bitcoin core on a mobile device won't be much easier for me, so please let me know if you know of any way to store my bitcoin without downloading the complete bitcoin core.
You can try out these recommendations if you finds the use of bitcoincore more of a challenge to you, but know that it's the most secured of all means, yet while using the ones recommended, you will also need to learn how to use them and make the best decision you soughted from sourcing for an alternative.
Passport ElectrumSparrow BluewalletAll these are wallets that are non custodial and you can include this cold storage wallet to the list, which is "hardware wallets" try to understand the security practice and things that are expected of you to do with the use of any of these wallets.