Diversification of the funds is important, in my opinion.
Even if you don't have that much funds, you still can do what's in your ability to minimize the risks for yourself and diversify. As well as manage the risks.
That's only my opinion, of course.
Even though I do use only two wallets myself just for the reason to not to have all the eggs in one basket, nothing would be wrong to diversify even more
Diversify your fund into different wallets is a good practice. You are managing your fund like whales that never store all bitcoins in a single wallet. Whales have other reasons for this practice too but let's discuss only about safety of your fund by this diversification.Even if you don't have that much funds, you still can do what's in your ability to minimize the risks for yourself and diversify. As well as manage the risks.
That's only my opinion, of course.
Even though I do use only two wallets myself just for the reason to not to have all the eggs in one basket, nothing would be wrong to diversify even more
One wallet can be hacked, one device can be compromised, but if you can diversify your fund into some wallets, it's good. At least it saves you and you won't lose all your bitcoin in a single accident like hack.
The key is always be careful with your practice online and offline. Choose a good wallet (non custodial, open source), create your wallet, back up, test your backup, funding it with a small amount, and only funding it with full amount later if a small test works well. Store your backup safely and check it regularly.