~im not sure if its my ignition lock~

ive looked at the other posts and my car is acting a little differently i had two sets of keys for my car one that i used all the time and a spare set. i lost my original key and had to use the spare and ever since i started using this key my ignition gradually stopped working but it also has a hard time turning the door locks as well and will unlock the glove box and trunk fine i dont have alot of money and was wandering if maybe i ordered a new key if this would maybe fix the problem i never had this problem until i started using the spare .thanks in advance for any help my car is just sitting becouse the ignition wont turn ive tried wigglin and tappin and graphite and dont want to have to drill the lock please some one help me!