SEO recommendations and suggestions.

Hey!
A site in two languages has been added. However, owing to programming limitations (knowledge), I can only add one headline text for that website. If the language is changed, neither the title nor the meta description will change. Google just announced that it can now look up the information on your website and automatically add the title/meta description to searches, even if you don't have one. Now the dilemma is whether I should keep both languages' titles and meta tags in English or remove both and let Google perform its magic in searches. Will this have a significant impact on my SEO?

1. Write for humans first and search engines second.
2. Use targeted keywords in all the right places
3. Focus on user experience (UX)
4. Focus on building relevant links
5. Format content for Featured Snippets
6. Remove anything that slows down your site
7. Pay attention to Google algorithm updates.

Same suggestion here. Agree with @Laragiles.