You have access to Pipertts in Read Aloud, they got some good voices. The problem with local tts is mainly the time it takes to generate, but piper's really fast and the voices are ranging between bad to pretty good.

Alternative if you know your way around python you can use Sherpa-onnx, which allow for a wider selection of voices with higher quality. But you'd have to do combine the python script with something like Autohotkey (if on windows) to easily pass data from your clipboard to the python script.

You could hook it up by setting a shortcut like alt+1 in a Autohotkey script that preforms a copy on the selected text, then sends that content to the python script as a argument.