How you quit a job becomes the reference they give. Leave the way you’d want to be described.

Departures are remembered in summary form, and that summary is what gets said about you when someone calls. Whatever happened over the months gets compressed into a sentence, and the last few weeks have a disproportionate influence on which sentence it is. Industries are also smaller than they look from inside a first job.

Give proper notice, finish what you can, and say nothing on the way out that you would not sign. If the place treated you badly, leave that as their story rather than yours. The version you want quoted is the one to perform.