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".
First of all, you should start thinking about your investment goals and risk tolerance. Are you looking for a short term investment like buying and selling crypto to make a quick profit or are you looking for a long term investment like holding crypto for years? Knowing your goals will help you decide which coins to invest in and how to manage your portfolio. I would therefore recommend you starting by educating yourself about cryptocurrency and learning about the different options available. Then, you can decide which cryptocurrency you want to invest in. You should consider the dollar cost averaging strategy where you invest a fixed amount of money on a regular basis regardless of the price of the crypto.
Remember, Bitcoin is the most safest crypto to invest in but you may consider some altcoins too. It's all risky by the way....!