Hi there, I'm struggling with what was supposed to be a simple diy job - installing this towel rail.
However when I installed the included wall plugs, I drilled the holes slightly too big and the screws and wall plugs did not have enough grip.
I then went back to Bunnings and purchased larger wall plugs - WallMate screw in anchors - and this time screwed them in manually with a screwdriver. While the wall plugs went in flush and tight, screwing in the provided screws into the plugs eventually loosened the plugs again - they lost grip and started to spin, so the screws lost their bite. I now have three larger holes in the wall and am at a loss of what to do - the drywall seems incredibly weak and unfriendly to typical wall plugs.
I'm planning to go back to Bunnings to try a set of butterfly anchors as my last resort, but I'm unsure of whether the larger screws will fit the mounting plate of the towel holder. Posting this here as a last ditch effort to hear from anyone else before I head back to the store tomorrow.
Here's a photo of the larger failed wall mates I purchased, along with my three failures. Would really appreciate any help here!

Thanks for reading and any advice in advance.