How to reduce risk of loss in PSX

I am retired defence officer. After my retired I served in brotherly arab country. I have done Executive MBAs in HRM & Marketing. I had some interest in stocks business so I decided to invest in Pakistan Stock Exchange. Before opening an account I did some training of trading at my own. Initially I suffered losses then I took expert advise of an expert and did a middle level course on investing in stock market. In my three years experience of stock market I have learnt that we suffer loss only because of our mistakes and lack of knowledge of this complex business. My purpose for making this channel is to make people learn from my mistakes. I will narrate my mistakes to you from time to time so that you don't do those mistakes. I may not make too much profit with my three years experience but I don't suffer losses any more. My vedios will be very fruitful for the beginners. My Whatsaap is 03352024665.