I want to mention one thing. SEO is one of the ongoing processes. So for a good ranking, you should keep going with SEO.
Before Launching Website You should remember these things:-
You must have a unique domain name with .com, .in, .net., .com.ng Don’t choose a domain Like Flipkartdotnet, Amazondotnet, or other brands too. It will impact to SEO of your website or blog.
You must have some quality content ready with you.
Find what people are searching on the internet or do good research about your niche.
Choose the Language of your website. Because it is the foundation of your website.
Your Website should be Mobile Friendly because most of the users are on Mobile.
You must have to submit your website Google Webmaster, Bing Webmaster.
After Launching a website you should remember these points:-
You must have to Focus on SEO on-page.
Find Good keywords from Keyword planners.
Try Long-Tail keywords. But don’t overload with keywords only use relevant keywords. Always use the H1 heading in your article.
You have to make some quality backlinks for your website or blog.
Always focus on Low competition keywords it will help you to rank your website or blog.
Always provide an Alt tag to your Images.