Mens 27" Mountain Bike

Mens Bear Mountain 27" Mountain Bike. Only ridden a handful of times. Purchased new from Walmart and have had nothing but issues. Didn't try riding it until after the return window and have just never done anything with it. One of the rims is possibly bent, handlebar grips are sun damaged, gear selector is sticky/partially seized. All of these have been issues since brand new except the handle bar grips, that is due to sitting in the sun.