Minecraft on a Mac

So I had done some research and I know that Minecraft is downloadable on a mac. I also know that people play it on a mac and that it is supposed to run pretty well. But someone told me on this website that my computer doesn't meet the minimum requirements after I'd had it for a few months. The first 3 was okay, but then there was a few bugs and lags and glitches that prevented me from playing. So my question is, can you play Minecraft on a Mac (properly,- there can be a few lags or bugs but not too major ones- I mean playable)

Thanks for your help in advance!

 

PS if minecraft is playable, then could someone help me fix the glitches?