Chasing trends means always arriving second. Build the thing people will be chasing next.

Following what is already popular means arriving after the advantage has been taken, because by the time something is visible it is crowded. Being early requires guessing, which means being wrong sometimes, and that is the real cost of going first. Most people prefer the safety of late.

Pay attention to what is annoying you or missing right now, since that is usually where the next thing lives. Build a small version before there is any evidence of demand. You will be wrong often, and the times you are not will more than cover it.