How to get a link to PowerPoint file as slideshow in SharePoint?

I have PowerPoint file uploaded in a SharePoint Online document library. I need a link that will directly open an Slideshow of the file. How can I get a link for slideshow?

What I tried Already?

1. I tried to assign read only permission and then shared the file but still it didn't worked
2. I directly uploaded *.ppsx file to the document library and shared the link but that also opened the PowerPoint file in edit mode.

Any reference link or solution is most welcome.