Is there any way to use a normal push button the same way as the set value button? or maybe a set value hotbox?
The default set value button is basic and too default doesn't look good in my current project.

You could assign the pushbutton to a trigger tag. Then create a multi-write tag that executes based on the trigger tag. Kind of laborious but doesn't cost you any licensed tags.

That's one thing that took me a while to get used to. Most other software lets you run a little script when a button is pressed or released. Example: on release, TAG1 = TAG2. Now my mind has to go to how to execute a multi-write tag instead.