Considering OP's lack of knowledge in crypto safety, he will likely handle his mnemonic recovery words stuff on a potentially unsafe device or (even worse) on his daily computer. o_e_l_e_o already pointed this out that any handling of mnemonic recovery words on a computer should be done on a safe and permanently offline (or agnostic disposable) device.

I find overly complex encryption schemes, self invented worst of it, a quite sure road to loss and desaster later, unless you perfectly document everything. How do you protect your documentation then? Never rely on your memory alone, it will fail you in some future (I speak from own experience).

As others have pointed out: go for proven schemes (mnemonic words and separate mnemonic passphrase; stored safely in redundant safe and secret locations // multi-sig stored safely in redundant locations // use hardware wallet(s)). Mnemonic recovery words and (if used) a mnemonic passphrase should only be backed up on physical non-digital media (paper and stamped in stainless steel or titanium).

If OP needs some inspiration: you may have a look into free PDF book at https://www.smartcustody.com. But understanding crypto and Bitcoin in particular is also important to judge what is appropriate or what is silly. See https://learnmeabitcoin.com