Don't beat yourself up too much, a lot of macro looks a bit iffy if you start examining 100% crops. If you really want detail in that bee in a single shot you'd probably want to be closer, using a 100mm fixed length macro (and probably a raynox), with a ringflash encircling your subject or flash with large diffuser overhead. Or you could try
stacking with reverse enlarger lenses if you want pixel level detail. 1/60 for the top shot at 200mm is quite a slow shutter speed and you did quite well considering. The bee you're at 240mm f/5.6, perhaps not the sharpest combination of settings, 8 would probably be better but still I don't know the performance of that lens at 240mm. Flash is usually a good option because whilst your shutter speed might be fixed at 1/180 it's the duration of the flash output that actually matters, which is shorter than 1/180, so freezes motion. But for shadowless flash you need to really wrap round the subject which is why I suggest a shorter focal length. Fyi, this is what a raynox & ringflash can do for you, took this a couple of hrs ago out in the garden: