Alocasia can very easily go into a dormancy phase and dieback in winter. Increasing light and humidity can help deter this, but if leaves are lost and become unsightly you can trim that particular stem to the base and await a new shoot.
Thrives in medium to bright indirect light.
Most Alocasia like to stay slightly moist but not soaked. Wen the soil is dry water well.
Alocasia can be sensitive to hard tap water. Try using filtered water or leaving water out overnight before using.
Alocasia love humidity and clean leaves to absorb more light - so keep them dust free with a damp cloth, and the microclimate around the plant humid with a mist.
Wilting plant: under-watered
Yellowing leaves, soggy base: overwatered