Do you have experience to share concerning data recovery for your computer?

The hard drive of my old computer may have failed. It made weird sounds and hung instead of booting. I turned it off right away. (I’m using a cheap laptop right now instead.)

I’m overdue for a new computer, but I don’t want to have to buy one and have been avoiding it for about two years. I’d like to salvage the data, though, if possible.

Have you had to go through this? If so, any wisdom to share? (Besides backing up your stuff, because, thanks, I know that, and I took a stupid risk.)

Ever hear of these guys? Comments?
https://www.securedatarecovery.com/

Thank you.