I have tried bulbs in pots in past years and had them to rot probably due to inadequate drainage. Would love to try one more time with some Jetfire daffodils and Anemone Blanda. We don't have a lot of freezes down here anymore maybe due to climate change. We do have a good many relatively warm days during winter. Any tips, ideas, etc on what I should be doing to ensure success.

If freezing temps are the main factor of succes, you could always store your bulbs in the fridge until spring and then plant them out.
If drainage is the problem: go for a potting mix with high loam/sand quantity.
Besides that, just hope for the best.

I've planted bulbs in well draining pots of various sizes and the pots are made out of plastic, resin, or clay. I pot them with potting soil, and they're fertilized with Bulb Food and left outside all winter. I don't water them, I let Mother Nature take care of that for me.

We do get many days of freezing temps. I've not had any problems with the bulbs rotting.

Good luck if you try again this year!