What is better strategy for new website?
SEO, SMO or PPC please explain

1-Perform keyword research
2-Optimize onpage element
3-Create an off page strategy

Determine Your Website Goals.
Design a Website to Meet Those Goals.
Understand Your Audience
Know and Promote Your Value.
Develop Measurable Goals.

Determine Your Website Goals. ...
Design a Website to Meet Those Goals. ...
Understand Your Audience. ...
Know and Promote Your Value. ...
Develop Measurable Goals.

Design a Website to Meet Those Goals.
Understand Your Audience
Know and Promote Your Value.
Develop Measurable Goals.

First try to create awareness through social media , go seo and last paid ad

SEO
Use Quality Domain
Good Content
Keyword Research         

Choose Your Domain Name Carefully.
Select a Reputable Web Hosting Provider.
Perform Keyword Research.
Use a Mobile-Friendly Design.