For those who can't afford most of the offline wallet can go for non custodial wallet to store their investment
Every wallet you should use ought to be non-custodial. A non-custodial wallet is not a substitute for an offline/cold wallet. A non-custodial wallet is just one in which you have your own seed phrase, there are hot and cold non-custodial wallets and also open source and closed source non-custodial wallet. The perfect and best combination is a cold wallet which is open source and non-custodial.