plant problem, lower leaves dying, please help

the lower leaves are shrivelling and falling of as seen, also the plant is kind of drooping. really want to sort out the cause of the dying leaves. the drooping is probably from low humidity levels (20-30%). been watering usually once a day or every other day. how much water should a plant that big get every other day?

It either needs to be fed or it has ph lock out. Watering should be every other day at most.

looks over watered with water of a high or low ph. if using tap like myself, let it sit out for at lease 24hours

That is lock out, all day.
Maybe from water softener.

You need to get on filtered water and flush the shit out of that soil/mix. It is a hungry plant as well, so eventually you'll need to feed it.

Looks like nute burn and definitely over watered. Flush and then dont water until they start to perk up again