The sites you’ve listed may offer opportunities for guest posting, but whether or not you can post as a guest for free depends on their specific policies. Here’s a quick breakdown of how to proceed:

1. Research the Website: Visit the sites directly and look for sections like “Write for Us,” “Contribute,” or “Guest Post Guidelines.” These pages often outline their requirements and whether submissions are free.
2. Check Their Domain Authority (DA): The DA you provided indicates these sites have some online credibility, so guest posting here could be beneficial for SEO. Higher DA sites are usually stricter with submissions.
3. Content Relevance: Make sure your content aligns with the niche of the site. For instance:
   • Bipamerican.com seems U.S.-focused. Articles relevant to the American audience might work.
   • Houstonnewsbuzz.com and Bipdallas.com likely prioritize Texas-specific or local news.
4. Cost-Free Submissions: Some sites offer free guest posting but may expect high-quality, original content. Others might charge for promotional posts. Contact them directly for clarification.
5. Reach Out: Use their contact forms or email to propose a topic, ensuring your pitch aligns with their content.