What does fix mean in slang?

Hey there, I've been hearing the word "fix" being used in a slang context quite often lately, and I'm a bit confused about its meaning. Could you help me out with this? Is it like when someone says they need to "fix" something, does it mean they're going to repair or mend it, or is there some other underlying meaning that I'm missing? I'd appreciate it if you could clarify this for me. Thanks in advance!