ETF's and Costco

Re-entered trading again after a long break. A long break. Last time I was trading stocks $Plug Power (PLUG.US)$ was 0.56 per share. I really wish I still had some of thousands of shares i once owned. That spike to 75.00 in January would've been fun. I learned that you need to be patient. Like patient for years! Too many people looking to get rich quick. And although that would be nice you can't bank on that happening. Getting into ETF's is where I'm at lately. $Dbx Etf Trust Xtrackers Msci Usa Esg Leaders Eq Etf (USSG.US)$ $Dbx Etf Trust Xtrackers S&P 500 Esg Etf (SNPE.US)$ are my 2 main ones. I also own some $Costco (COST.US)$. I'm looking for the market to have a bit of a dip next year so I can continue to gobble up shares at a lower price and then I expect to cash in in three to four years or after the next bull run whenever that is.