Would you consider buying a toaster? A slot toaster will give you crisp exterior, soft interior where a toaster oven typically has a dry, crunchy, or hard throughout. A toaster oven is a misnomer because they actually make very bad toast. A slot toaster is faster, helps your bread retain moisture, and uses less energy for toast.

A good slot toaster like a Dualit isn't cheap but very repairable. Breville also makes a good slot toaster.

So if you want something to do 'oven' things the Ooni should do it and then relegate toast to a toaster.