How to embed YouTube videos to the website without using iframes?

I have embedded YouTube videos to the website using iframes. The website is fetching videos in real-time which mean whenever the user uploads a new video on YouTube, it is updated on the website too.

Now there are two reasons I'm looking for iframes alternate.

  1. It makes the website slow. Every time the site is loaded, videos are fetched from YouTube and it is making the website slow.

  2. I'm learning SEO, and I read iframes hurt website SEO performance.

So, what alternates do I have?

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