Speedbumps are bollocks.
Extra crap to maintain. Noise creators (revving of engines as they pull away trying to maintain lost pace, clatter of vans and goods vehicles, etc). A menace to cyclists (bumps as well as full width humps). Etc etc.
Much better to, y’know, design the road and streetscape properly. As a last resort, give me a (well-designed) chicane over a speedbumps any day.
If you can get an elected representative onside, always better to have them push it than to be a(nother) lone complainer easily dismissed by an under-resourced council officer.