having a tough time cooking chicken

[Zoealso]

ever since I moved out on my own I mostly depend on delivery service or going out to eat
I’m not cooking at home like I should be and I think it’s affecting my health and affecting my waistline
I’d have a difficult time cooking chicken seems like it spoils when it’s in the fridge and when I cook it it smells really bad and it doesn’t taste good like it does from the restaurant
can you give me some tips and ideas when it comes to cooking it?