I have a 17 mth old, she is horrible, i am begining to hate my life?

at home the mess can be somewhat contained, but out in public of ANY setting it can not be controlled. she will punch, squirm, kick, bite, and scream to get out of the chair or stroller she is in. to add to this, i will let her out to walk it off but she runs and screams away from me. i bring her to the park to play and we will literally leave 5 minutes after getting there because she will run away and not listen at all.i bring balls, bubbles, kites,munchies, everything can think of for her to play with, but every time, the same thing....disappointment...running,scream… and she doesn't want to play. going anywhere with her has turned into a nightmare. going out to eat isn't enjoyable anymore. either me or my husband have to get up n take her out of the restaurant and walk back and forth w/ her while the other one eats. cant go to the pool or beach for more than 45 minutes or in today's case....4 minutes. i now envy people with even mildly behaved children. ive done everything from time out to public spankings to yelling and screaming. i am at my end and im staring to think i am not cut out to be a mother.i don't know what else to do. .please any suggestions would be helpful