I'm in the same boat and as an absolute beginner I found really difficult to "just draw" anything that comes to mind as well.

My objective is to become loose enough to not to care absolutely about the result and draw anything that comes to mind, but it's something that I need to work on.

Meanwhile, I'd like to share a couple of tips to have a bit fun while drawing:

-Sketch an area around you. Draw the room where you standing right now from your POV (something like this - not mine, found on google). You can draw the same room from many different angles so you have a lot of options without going too far. The bathroom, the kitchen, outside. Actually sitting and starting this is kinda boring, but after a couple of minutes you begin wanting to add as many details as possible, because you unconsciously want to complete the scene you're watching with all the elements you're seeing. Not only this becomes (imo) super fun, but you're learning a great deal about perspective, forms, you're expanding your visual library and generically practicing your hand. Usually the results are pretty nice even if you don't know almost anything about drawing (like me), which rewards you with satisfaction and desire to draw even more. Try it a couple of times, if that doesn't work for you it's fine, it means its appeal is subjective and you can try something else. I personally suggest drawing human environments (like rooms, buildings, etc) because natural stuff like rocks, mountains and plants are very organic and difficult, while man made objects usually are geometric shapes you need to construct but are generally easier to approach.

-Copy anything you like which is simple enough for you to copy. Take for example one of your favourite artists for character designs and copy one of his works. Find something that you feel is manageable to you without spending too much time trying to find the perfect reference, anything you can copy is enough. It's a well defined objective that lets you explore what you love without thinking too much about what exactly to draw. Probably the result won't feel "yours", but it doesn't matter. The objective here is not producing a work for others to see.

It started as a quick tip message and it turned out a giant wall of text lol.

Anyways, good luck and have fun :D