My Masters by Mercy Kay

I saw an ad for this but the only place I can find out are those sketchy sites/apps that charge a ridiculous amount per chapter.

It's about Emily who goes to a BDSM club for the first time. She says she is a submissive not a slave but leaves the club quickly. While there she catches the attention of Matt, Gideon and a third guy that I cannot remember his name. They are masters looking for a slave.