Properly Adding Videos Without Slowing Down Site

Hi. I’ve been trying for hours to get just a few videos on my website… I keep running into issues. I own a vintage jewelry website, and I have a few videos of items spinning on a turntable. I want these videos on my product pages… Here’s the problem.

I tried uploading them directly into WordPress. For some reason, the videos sometimes don’t work. They can stop half way through. They sometimes don’t load. They also take up server space.

So I decided to make a Youtube account and put my videos there so that I could just embed them onto my site. However, after adding about 30 videos to my site I am getting super slow loading times. I became suspicious of this and ran a speed test on pingdom.com. It shot all of these cast_sender.js errors at me and they seem to be coming from all the youtube videos.

So here’s my question… Is it possible to add videos to a WordPress website such that they are consistently working and do not slow down my website.

I am really at a cross roads here because the WordPress player seems to just not work sometimes, and youtube throws little snippets into my site that slow it down.

I could really use some help here.