Im stuck with no default font in my editor!?!

I have a project ive been working on and i was in the 2022.3.40f1 version of Unity and so i decided to jump forward to the latest recommended version (Unity 6.0 6000.0.47f1), i do this and when my project opened i noticed a lot of UI glitches around the top of the screen, mainly things overlapping, i go and hover my cursor over them and i get flooded with these errors

Unable to find a font file with the specified Family Name [System Normal\] and Style [Regular\]. UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

ive spent the last 2 hours with chatgpt trying to figure out what the problem is and how to fix it but nothing it suggested worked for me, i dont recognise this font as any that i use and ive deleted and updated my manifest.json a bunch and still have no silver lining, pls help me :')

https://redd.it/1k2fajp
@r_Unity3D

What do you think ?

https://redd.it/1k2f88u
@r_Unity3D

How to make shadows for a 2d topdown game using the lighting system and tilemaps?

https://redd.it/1k2hx3y
@r_Unity3D

I’m making roguelike deckbuilder where the cards are blank slates that you build however you want - That Time I Found A Box - Demo just released
https://youtu.be/FppMq_yeJyY

https://redd.it/1k2i2mo
@r_Unity3D

My floating islands now have many biomes

https://redd.it/1k2is3d
@r_Unity3D

I finally have my special effect working!

https://i.redd.it/l9pxrd2w4pve1.gif

I've loved seeing this effect around! I wanted to add it to my game but was super intimidated by shader graphs.

Well, with the help of a tutorial, I finally have it to use for a special attack! Thanks, https://www.youtube.com/@sasquatchbgames !

https://redd.it/1k2lbqz
@r_Unity3D