I'm suppose to do part time job instead of ither person.( Sorry, I can't understand this sentence.)

>>>I did the part time job instead of another person.

So I don't want to rain or snow.

>>>I don't want neither rain nor snow.

Recently, I am spiritless. I'm having a rest this semester.

So I haven't classes thus my routine is very free.

>>>I have no classes so my schedule is free.

It''s make me spiritlessly.

>>> It makes me idle.
I want to busy and have to busy,

>>>I want to be busy and have to do many things.