Hey there! First off I just wanted to say welcome to the community! We are so happy to have you! I can certainly understand wanting your phone to be set up as desired so let's try some of these steps to get your text messages looking how you want!
Launch the Settings app, and then select Display, select Font size and style, here you can adjust the options as desired.
You can change the Font size by dragging the slider left or right. Tap the switch next to Bold font to make the font appear bolder. Tap Font style to change the current font or download a new font!
