I have tried everything I could find on the internet today and nothing helped.
Really? You tried
everything you could find on the internet?
Are you using SKSE version 1.04.08 or 1.04.09? If so, you need to update to 1.04.10. You'll also need to update any SKSE plugins that you're using. Versions 1.04.08 and .09 had errors in them that led to crashing. 1.04.10 fixed that problem, but some SKSE plugins used the code in .08 and .09 that was causing the crashes, so they might cause problems as well. Most people who have posted about decreased stability in 1.4.21 have had their problems resolved by updating SKSE and any plugins. Other than that, you'll have to provide more information if you expect to receive any help.