Why is the RStudio IDE in bad resolution

Why is the RStudio IDE looking in such a bad quality and how can I make it look better? Here is a picture:

I'm using RStudio in a debian 11 virtual machine, runing within a chromebook. The specs of my hardware are:

  • Processor: Pentium N5000
  • RAM: 4GB
  • OS: Chrome OS
  • VM: Debian 11

For some reason, the picture looks much better than reality.