I think the bull run will continue due to the twin dynamics of TINA (There is No Alternative) and FOMO (Fear of Missing Out). Fund flows into US equity funds should maintain a positive trajectory in 2022 as the economic recovery continues with the exit from the pandemic
Moving average is good for spotting overall trend and dynamic support. But breaking above and below to initiate a buy or sell you might get trapped more often than not. You need to pair it with other indicators. One that I use is volume analysis. Volume is to show whether breakout is real or false. 2nd is to spot whether a retrace is a pullback or a short term trend reversal.