Text should be able to flow around objects and images (not necessarily in text boxes but especially if I write on the whole page). I have a diary for my journeys and work with A LOT of images. I have to insert a lot of text boxes to create something that looks like flowing text but if I add some words on top of a page I have to change every single text box below.
Also, I would welcome an option to write in more than one column.

I need to be able to go into settings and change the default size of the Text, so I don’t have to adjust it each time I make a new box.

I agree with this! It would be so much better to have bullet points and an option to write on the document as a whole (i.e. like in microsoft word) on top of having a text box. A lot of my friends use notability because of the lack of text features in goodnotes. Having 'good notes' also includes having good typed notes :)!

I think the way how Notability macOS app deals with text(typing) input is way more intuitive than the GoodNotes macOS app. Please consider improving it!!!!!

Its also so annoying that every time you type a new box, the format goes back to default! You have to select each size and format again! Just do it like apple notes

The text also should fit in the height of the squares of notebook background

On Mac, the text tends to disappear and glitch out multiple times before reappearing. Upon reappearing, however, it prevents you from editing the text.

The insertion point [cursor] should also be changed to allow you to shift throughout your sentences to fix mistakes. Sometimes it glitches and does not allow you go back using the arrow keys.

Typed Text Features Needed Right Now! Simply as a note taking app such as Apple Notes. Using the TextBox feature is totally cumbersome, subpar, annoying. I would rather go back to Apple Notes than write typed text notes on Goodnotes. Even copying and pasting is truly a nightmare.
Would be great to be able to write and format typed text, maybe as a note type other than handwritten note.

+Add a feature to place text boxes that automatically fill the space between a predefined page margin left and right. In other words: limit the degrees of freedom when placing a text box to only vertical direction.

Agree on everything, especially as i use the text tool everyday!

+ adding a button to delete textbox

Keyboard shortcuts also please.

Also having to swipe between pages instead of having continuous pages. I really do not understand why you thought swiping between pages was a good idea.