It still will not turn on.

Hi debberag79,

Welcome to the Apple Community, where some of us do our best to help each other :)

Wondering what you have tried already ?

Did you view / try / the "Related Article" from the link above your question on this discussion page ?

Apple Support have other articles (below) that may help you:

Start up your Mac in Safe Mode:

https://support.apple.com/en-au/guide/mac-help/mh21245/11.0/mac/11.0

Ways to start up your Mac

https://support.apple.com/en-au/guide/mac-help/mh26785/11.0/mac/11.0

Wondering if there was a battery warning ?

Also, what year was your Mac manufactured : (Apple icon / About this Mac will tell you.)

Might it be that your memory / storage is overburdened, so it struggles to cope ?

If your Mac starts in Safe mode:

Best place for accurate info. on storage / space:

See used and available storage space on your Mac

https://support.apple.com/en-gb/guide/system-information/syspf9b375b9/11.0/mac/11.0

Apple has a support an article that provides some answers about the battery

"Get help with your Mac Notebook Battery"

https://support.apple.com/en-au/HT204054

Determine battery cycle count for Mac notebooks

https://support.apple.com/en-au/HT201585

Battery Service:

https://www.apple.com/batteries/service-and-recycling/

Hope there is something here that is useful, or helps you :)