I also am a Canon user and recently purchased the Sigma 105 f/2.8 OS HSM-really, really nice lens and also cost played a big factor in my decision. I'm very happy with it and highly recommend it. You could always try renting first to see if you will like using it. I'm still pretty new to macro, but it's quickly becoming one of my favorite len's to use and objects to shoot. It's a great lens I've also heard it makes a nice portrait lens, haven't tried that yet

I couldn't agree more. Owning a 200mm, 105mm and a 60mm allows for just about any macro shooting opportunity. I took this shot of flower buds while in Mexico last week using the 60mm macro lens on a crop sensor camera. The 60mm is my go-to lens for flowers and setup shots indoors. The 105mm is a great length for general all-around shooting and is likely the most common length +/- used. The 200mm is my hunting insect lens in the field due to its extra distance minimum focus for insects that may sting, bite or that may be skittish.

We have similar flowers here in Hawaii. I don't generally use flash. All the ones I posted were with natural light.
My advice is to get your flash off the camera and out in from of the lens in some fashion and to diffuse it in some manner as well. Macro lenses are built to a high quality so there are only subtle differences between them (camera mount specific of course). What makes the most dramatic difference is the quality of light used in macro photography for photography is 'painting with light'.

For me, macro photography has been not only highly addictive but it changed my retirement life and the UHH True Macro Community has helped and supported me every step of the way.

Enjoy your passion - Sippyjug.

Well done Daisy with the lens you are using. I also use the Canon 80D and when it came time for me to delve into the macro world I researched lenses until I was blue in the face. I ultimately settled on the Sigma 105mm f/2.8 OS HSM for a couple of reasons. Optical Stabilization, cost (about half the price of a Canon) and the positive reviews.

https://www.adorama.com/sg10528meos.html

There are some available on the used secondary market as well, which is where I purchased mine. (ebay)

Best of luck and enjoy macro.

The images you posted are really just "close up" and not macro. Unless you are going to photograph the innards of flowers or very tiny ones, a macro lens isn't needed. If you do want one, I would think something in the 60mm range would suffice. Now, if you decide to shoot insects, then something longer would be needed. I use a 105mm macro (macro is my niche) and I have no problems getting close without scaring off the insect. Granted, some will skedaddle, but most don't as long as you know about the subjects proclivities. My Flickr stream (link below) has lots of macro images, flowers as well as insects. I use an older manual focus macro lens from the 1980's even though I have 8 choices in macro lenses from 55 to 180mm in length and MF & AF iterations. Find a link below to my "Flower" album... Note, some of these flowers are very small

https://www.flickr.com/photos/screaminscott/albums/72157594388593116