28 year old ,unmarried , 1 Lakh /month salary , where to invest ?

So I am a Doctor , I very new into investment and stuff . Had made some bad investments in past as soon as I had salary. Hdfc sapoorn , Nishey etc etc I have 5 of them. Pros: I dont have any loan, basic needs like House , Health insurance (family), had taken term plan at age of (26yr ). I can invest upto 40-50K per month . Had you been in my place with your experience, what you have done ?