So feel free to let us know what your best cryptocurrency advice is.
My best cryptocurrency advise is don't disclose your crypto invest in the public domain because we don't know who is who. Your friend might be your enemy probably because of what you told him. And he might arrange bad guys to come and attack you.
And don't keep you long term investment coins in any exchange unless the coins are for immediate sell out. Always keep your investment coins in non custodial wallets.
Agreed, It is very important to ensure the security of Bitcoin for long-term storage, Bitcoin is a long-term asset, so keeping this long-term asset on an exchange is never the right decision, it must be kept in a safe wallet, exchanges are never for long-term storage of any asset, they are only for short-term buying and selling, so you must be aware of this.
Long-term holding means you have to keep everything private and keep it as safe as possible, and for this, keeping it in a personal non-custodial wallet rather than on an exchange is the right decision.