Let us break this down first with short term investing because using average may not be the best as you need more certain data that is not based on averages. Standard deviation and Bollinger Bands may be better suited for a short term range bound trader as those can offer more real time data points. The average will still have lag even though it is smoothed a little bit.
Switching over to longer term trading, the averages may work well because here you are looking at real long trends that may take months or even a few years. It has been proven that long term buy and hold typically outperforms trading, so this is the better of the two options statistically. Trading certainly has benefits but the risk is higher and many people are looking to take risk off the table.
Some other moving average to use along with this may be the simple moving average, exponential moving average, or different period lengths of the triple exponential moving average. Testing these are getting to know how the work is important and critical before implementing them in your current trading and investing setup. Always test on a demo account first because when you make a mistake, it does not cost you money.
With all of that being said, join an investing and trading forum or community to see how others are using this tool in their trading setups. Ask questions and see if there is a more efficient way to use this tool. Also, reach out to an investing professional because they are bound to know how to use this instrument and can help you along the way. Again, moving averages are better for the long term investor because there is lag and it may interfere with the quickness of day trading. If you must, use other tools and indicators when trading because this will give you a more accurate idea of where the market is going.