There are several common reasons why a website might not be showing up on the first page of Google:

New website: If your website is new, it might take some time for Google to crawl and index it. It can take a few weeks or even months for new websites to appear in search results.

Technical issues: Make sure your website is mobile-friendly, has a fast loading speed, and is easy to navigate. Technical issues can prevent Google from properly crawling and indexing your website.

Low-quality content: Google prioritizes high-quality content that is informative, engaging, and relevant to the user's search intent. If your website's content is thin, outdated, or irrelevant, it's unlikely to rank highly.

Lack of backlinks: Backlinks are links from other websites to yours. They are one of the most important ranking factors, so if your website doesn't have many backlinks, it will be difficult to compete with websites that do.

Keyword targeting: Are you targeting the right keywords? If you're targeting keywords that are too competitive or not relevant to your website's content, it will be difficult to rank high.

Penalized by Google: In rare cases, Google may penalize your website if it violates its webmaster guidelines. If you suspect this is the case, you'll need to address the issue and contact Google to request reconsideration.

Here are some steps you can take to diagnose the problem and improve your website's ranking:

• Use Google Search Console: This free tool provides valuable insights into your website's traffic and search performance. It can help you identify technical issues, see which keywords your website is ranking for, and track your website's index status.
• Analyze your competition: Look at the websites that are ranking for your target keywords and see what they are doing well.
• Use online SEO tools: There are many free and paid SEO tools available that can help you with keyword research, competitor analysis, and technical SEO audits.
• Consider hiring an SEO expert: If you're not comfortable doing SEO yourself, you can hire an SEO expert to help you improve your website's ranking.

Remember, SEO is a long-term game. It takes time and effort to see results. By implementing these steps and staying up-to-date with the latest SEO trends, you can improve your website's ranking and attract more visitors.