Check Domain Competitors: The Advertising Research tool provides a list of common keywords, online competitors’ AdWords spend, and estimation of paid traffic. The system will exclude results which aren’t from the real market of the domain by analyzing the overall number of keywords for every domain and the number of domains’ most common keywords. If the domains have a very high number of common keywords, they can be considered competitors. So, you can then focus attention on your PPC rivals.
Faizan, since you have a new blog, so you should go for least competitive keywords. You can use SEMrush Keyword difficulty (KD) metrics while doing keyword research for your niche. Don’t target keywords that has more than 50 KD and monthly search volume should not be more than 500-600. Please let me know in case you have any additional question for me.
Their SEO content template tool is also a great one for beginners. You have to just put the keyword you want to rank for and the target geo and it will provide you a template to do that. It'll tell you the keywords you need to use in your content and on-page elements and the domains from which you need to rope some backlinks to make your piece rank on the first page.