The 10 day moving average does not apply to all types of trades.
The 10 DMA is trading basics 101. A simple rule to follow for the unexperienced chartists. If the stock stays above the 10 DMA its a hold if it falls below its a sell. This works a good percentage of the time
Bounce plays are a prime example where the 10 DMA may not be a factor... A stock falls rapidly... ultimately plunging way below the 10 DMA, then you have to know support levels to play the bounces.
Bottom feeders play by a different strategy, they look for a stock that has been under accumulation at its lowest PPS levels, hoping for a big turn around. This is HIGH RISK/HIGH REWARD trading... stocks at their lows are there for a reason. Additionally, you may have to hold for years to experience any profit or total loss of initial investment.
There are so many other techniques no one person can explain them in a post. It can only be learned through years of experience (school of hard knocks) or private extended training by a professional trader.