Slowing down

[Elegant_Emperor]

You don't have a SWAP partition.
Can you please post a screenshot of neofetch?
If it isn't already installed, install it with

sudo apt install neofetch

Meanwhile you can check this out:

[HOW TO] Speed up Zorin OS 16

This is not a full guide within a post, but rather a link to an outside resource that is very extensive and good. Link good as of 18 July 2021, but I have saved the information in an offline file should the link go dead prior to the end of its usefullness: