Although Fidelity Investments has tools for finding just the right ETF, their tool is a bit cumbersome and a bit complicated. I prefer to start with a simple tool to isolate a few ETFs to examine, and then go to Fidelity to dig deeper. I use Weiss Ratings, but Seeking Alpha lets you use their tool for free.
The Seeking Alpha ETF Screener is a fairly simple tool to get you started. You can look at ETFs by capitalization (Large, Medium, Small) or by sector – like energy. You can look at equities, fixed income, US stocks or international. The results can be sorted by clicking on column headings. For example, on the “Holdings” results page I clicked on “Holdings” to see which ETF had the largest number of holdings for diversification. See this example:

Here is the same set of energy companies with dividend yield as the focus:

This is just a starting point. You should have an eye on expense ratios, performance, dividend growth, the nature of the holdings and anything else you deem important for your own situation.
Seeking Alpha Link: https://seekingalpha.com/etfs-and-funds/etf-screener