Using 2.0s alone likely will not help you achieve #1 rankings.
You need to diversify your link profile with blogger outreach links, business citations, etc.
I recommend you use web 2.0s to supplement your link building strategy.
Remember, Since ANYONE can create a web 2.0 and place a link, the value of the link is lower. That’s why you shouldn’t rely on them as your sole link building tactic!
Don’t put all your eggs in one basket.
Details: https://www.gotchseo.com/how-to-create-web-2-0-backlinks/