I carved a little piece of wood for it :p

If you want a temporary and cheap solution then use two erasers, otherwise there are stands like these which you can stick to the keyboard. There is also this stand which I've used for my laptop, but you might also be able to use it with your keyboard.

Put a small book or a TV newspaper or something like this under it at the part that should be lifted.
Or whatever else fits and is available.

Of course only if you don't have skills and/or don't want to spend money.

Google for "wedge rubber door stop" those might be useful?

🤔

Is the table adjustable? I don't mean electronic, maybe there are screws.
Also check chair and screen height.

I put my keyboard on a large chessboard in it's cardboard box.

I have 2 different keyboards, a full size and a 65% one. I have attachable risers on both, in 2 different styles. One is a long bar, the other is 2 separate little feet with more flexibility in placement and both work great. They each have 3 levels of height and even the lowest one is higher than the standard feet on either of my keyboards. You just press it to the top back of the keyboard via the sticky pads they come with and forget its even there. They are removeable and reattachable.

I crafted something for mine as well as mentioned above and used it for years and even so, eventually buying something meant to do the job was a huge improvement in typing comfort.

Something like this?

Hey Lugum, you could maybe 3d print it, or have someone print it for you, there are dozens of designs but reading that you'd prefer one adjusted to your needs I think it's very doable, that is in case the already available models dont suit you. If interested I'd look for those on printables, or thangs which is sorta a search engine that checks several sites. As for material strengh, temp resistances, minimum it'd be petg, but it's better in abs or something nice and sturdy that lasts you a long time. Prototyping is okay in PLA but might be brittle.
Now if you prefer already made products then you have a few here already by the comments.
Also, the cheapest option it'd be something like a rubber bar, so it does not slip in your desk when pushed, plus firm enough to support the kb. just my 2 cents :P
Happy New Year!

My keyboard has these little "flaps" you can use to lift your butt, I mean, the keyboard's butt. I imagine you have those up, and want up.... er?

Edit: oh, "legs would allow", I see. Nevermind me.

this is what i did, doesnt work on all of them. the larger ones can be bent to get the perfect angle and they stay on the keyboard

View attached image.

Home Depot will cut wood bought there to any size. There's probably a store equivalent wherever you live. Seems like a job for a simple 2x12 plank. Maybe two of them. :)