Follow these article. I am sure it will help you.
https://www.hallaminternet.com/what-...fect-rankings/

Redirect these pages (404 Error) to the informative pages.

Both Works, either you redirect your page link to informative pages or you can create 404 error landing page.

you can create 410 status error code for your pages so that when google crawls it easily de-index from pages.!!!

You can redirect your 404 errors to some other page using 301 redirects.
If your website is made on wordpress you can easily add a redirect.
Go to wordpress login
Enter your credentials
Go to Tools ---> Redirection
Add the url which is showing 404 error
Add the url where you want to redirect this url
Click add redirect
Wallah!!! done!!!

Here's a possible solution to resolve soft 404 error:
1. Generally, 404 error arises when you type an incorrect URL or the page has been moved or removed from the website & you are unaware of it.
2. If your file is static, open your client's FTP account & verify that the file exists in it.
3. Search engines find that there's a real page error when the URL gets redirected. As a result, the URL may be crawled and its content is indexed. Please re-indexed it.

Hope this will help you!

Redirecting a 404 is meaningless. Totally meaningless. Okay, more direct, useless.

You people have no clue as to how the internet, servers, etc. work.

404 errors have nothing to do with seo, unless YOU YOURSELF have typos or deleted something by mistake, or forgotten. But that's YOU!

If people knew what a redirect signals or means, they would realize that redirecting a 404 is inane at best.

Your best solution is to have a custom 404 error page. Period. End of story.

Either redirect or custom have anything to do with SEO.

BTW: You can NEVER, EVER, EVER, eliminate 404 errors.

If you seriously don't know why, then I revert you to line #2 above.

Paul