My current only strategy for my long term investment plan is to stay invested regardless of the ups and downs. I ignore the news from media and focus on the good companies. As long as the business is making consistent revenue, I stay invested and ignore the short-term downtrend.
I just started this year in March.

Ride through the ups and down.

I personally think ETFs can enhance our portfolio significantly if we carefully plan the entry point. For example, entering before a rate cut for small or medium-cap growth ETFs can be beneficial, as rate cuts generally impact them the most due to lower borrowing costs, which can stimulate economic growth. Lower interest rates can make borrowing cheaper for these companies. Sharing the growth for the ETF i entered recently.