>>1843456theres no such thing as a maintanance free bike
if you dont wanna do it yourself just take your bike to a repair shop for a check up every year or something
if you plan to leave your bike sat around collecting dust at all do not get hydraulic brakes or shocks, in fact avoid disk brakes entirely as these thigs degrade when neglected and the repair guy will want to just overhaul the lot
if you wanna fully put off maintanance for a long time get an internal gear hub with a belt drive and drum or roller brakes and tubeless tyres
one day these will need maintanance or an overhaul too tho
a fixie is the absolute peak of 0 maintanance followed by a single spead, both also can be belt drive but you probably want gears and brakes unless you live somewhere extremely flat
the other option is to stop being a pussy and just learn to do stuff yourself, on bikes built to be maintained maintanance is easy and cheap