You'll be more likely to get feedback if you provide a measured-out floorplan showing dimensions and locations of doors and windows. It also matters if you're able to relocate any plumbing for this renovation or not. If not, you'd better draw in the location and dimensions of existing fixtures (bath, shower, toilet, vanity) as well.

Please also indicate your budget.

$20K means you may have to DIY most parts of projects, as all painting and tiles need to be updated.

If to keep the tub, how about design like this, big and functional:

If no tub, how about this design, also big and functional:

Sorry but really Aqualaw advertising here is not a good plan. As for the OP post a to scale floor plan showing the window , where the toilet is since changing that can get very expensive and while you are at this going through the bathroom to the closet is poor design. In the drawing mark every mastrement and also the size of that closet . It is best to wait until you have saved a bit more money before wasting money on poor design. BTW pictures need to be taken so that they do not distort the space .

I think you're unlikely to be able to stay within your budget unless you are able to DIY a substantial part of the project. Do not DIY unless you really have the necessary skill as poor work will negatively affect the resale value. Learning from online videos is not going to get you to the skill level you need to do a professional looking job. Eliminating the tub would help as tubs and their fillers are surprisingly expensive. Do you need a tub? Do you use it? Moving fixtures also adds to cost.

I can't tell from the floorplan you posted where the fixtures are. Can you draw a floorplan on graph paper that shows the fixtures?