Greetings
How are you doing?
In July, it is all about action to safely store your bitcoin. You are working to spare some money to buy Bitcoin.
Your account is growing steadily on the exchange, but it is not safe enough to keep your bitcoin on a hot wallet.
You may have noticed the use of Hot wallet. The difference with the cold wallet is the direction connection to your fund stored on a common pot of fund where you don't own the security keys.

I would recommend moving your crypto from the exchange to your personal wallet. It is important to mention that the best way to store your Bitcoin is to own your key or passphrase off exchange, but if anything happens to that passphrase all your fun in that wallet is gone forever.
It is less and less an issue to move your crypto to personal custody with the multi signatures wallet protocol.
Furthermore, it is a process that require a small tutorial and information to recover your assets if a problem occurs.
I think that you want to keep some bitcoin stack for your children, it is only right to opt for the best system to safely transfer your wealth to the next generation.
If you have a way to keep your money off exchange safe for a decade of storage, owning your pass phrase fireproof flood and natural disaster free, please share the information with the community.
Regards