Think if you need a full-featured alarm in a place where you live.
Find a manual for your alarm and check how to put it in “valet mode” or other type of disabled state. That small button you found controls the security system, but usually it is a very limited set of commands you can do. Quite usual is to have a long press with ignition turned on to enter valet mode.
If you are lucky, instruction will include procedure how to bypass individual sensor inputs permanently - that will be the fastest “fix”, otherwise, place it in disabled/valet mode until you decide what to do next.
It is quite unlikely that that this small button would give you any sensitivity adjustments, it’s more likely that you have to look for the “shock sensor” somewhere under the dash or under some body panel, which would have 1-2 adjustment screws. The search may be quite frustrating unless you identify security system main block and retrace the wires… but then if you found the block, you are one step away from removing this stupid thing altogether