So In conclusion, I respectfully ask "what is your Effective Expert Advise for a Person (me) that has enough Salary but still want more Financial Stability using cryptocurrency".
I am not sure of the reliability of some cryptocurrencies in the crypto industry but I can vouch for Bitcoin. My advice is that you consider buying Bitcoin using DCA and focus on keeping it not just for the halving but for a longer time. But for you to achieve this it is also important to make provisions for emergency funds to cover your expenses in times of uncertainties. Some hodlers sold off their Bitcoin prematurely due to uncertainties. Since you are an old-timer in the industry I guess you know about keeping funds safely in wallets. You also stated that you are versatile in other businesses so diversifying your investment to other sectors outside cryptocurrency could also be helpful.
Investing in Bitcoin following DCA is a very good strategy. Many people invest a certain amount or a certain percentage of their salary in Bitcoin in a week or month and some also invest in altcoin because cryptocurrency can give us much higher profit than other assets. And while selling other assets may be a bit of a hassle, Bitcoin can be sold and cashed in just a few minutes, and an investor has complete control over Bitcoin. So there is no fear about its security. But for other assets, if someone is a victim of fraud, it is easy for him to take legal action and recover it, but this is not the case with Bitcoin. Here you have to invest at your own risk and give yourself full security. And once one somehow loses his bitcoins, it cannot be recovered. But Bitcoin hacking is rarely seen.