wtf is her problem

Ok, so this girl who I work with was cool with me for last month or so, we talked on the phone, messed around...but then she mentioned her ex-boyfriend and that he started texting her again, she asked me what should she do,she was thrilled to wait for his response, even though he cheated on her twice..I said to her don't be a dumbass and forgive him for the third time. But do as you want, I don't care.
I said i'm not your guy friend so you can ask me that opinion...i don't feel you like that. I think she was annoyed by my answer.
I gave her hints that I like her in some way when we had long talks on the phone.
Later she sent me a tiktok video where someone banters a male friend for venting off on his female friend. I then replied with a friendzone video..she gave a roll emoji...and called me a hater....I said ok. She then ghosted me. I called her by the phone, and she was clearly agitated, and was annoyed...she subtly laughed but not like before...I said in joke "Can't I call if need some advice"...and she replied "I'm not your friend"
I was like ok...sorry to disturb you. Bye

Is she ****ed off cause I said earlier I can't be her guy friend when she asked me about her ex in romantic way and other guys...or is something else in her head?

Ok, so this girl who I work with was cool with me for last month or so, we talked on the phone, messed around...but then she mentioned her ex-boyfriend and that he started texting her again, she asked me what should she do,she was thrilled to wait for his response, even though he cheated on her twice..I said to her don't be a dumbass and forgive him for the third time. But do as you want, I don't care.
I said i'm not your guy friend so you can ask me that opinion...i don't feel you like that. I think she was annoyed by my answer.
I gave her hints that I like her in some way when we had long talks on the phone.
Later she sent me a tiktok video where someone banters a male friend for venting off on his female friend. I then replied with a friendzone video..she gave a roll emoji...and called me a hater....I said ok. She then ghosted me. I called her by the phone, and she was clearly agitated, and was annoyed...she subtly laughed but not like before...I said in joke "Can't I call if need some advice"...and she replied "I'm not your friend"
I was like ok...sorry to disturb you. Bye
Is she ****ed off cause I said earlier I can't be her guy friend when she asked me about her ex in romantic way and other guys...or is something else in her head?

Yes. From what you've written it seems obvious that she's annoyed that she asked you for advice and you didn't give her the answer she wanted to hear and then told her "do as you want, I don't care" and "i'm not your guy friend".
She wants to get back with her ex ("he started texting her again ... she was thrilled to wait for his response) - which is stupid, as you've said - and doesn't appear to see you as relationship material.
She wanted a friend. You don't want to be her friend. Hence the clash.

She became distant now. Doesn't answer my phone calls, i've sent her a message "are we not ok anymore?" she replied after half hour "we're ok". At work she seemed cold and formal, and evidently doesn't want to socialise...should I let her be in her thoughts or maybe go talk to her? I don't want to make it worse than it already is

Ok, so this girl who I work with was cool with me for last month or so, we talked on the phone, messed around...but then she mentioned her ex-boyfriend and that he started texting her again, she asked me what should she do,she was thrilled to wait for his response, even though he cheated on her twice..I said to her don't be a dumbass and forgive him for the third time. But do as you want, I don't care.
I said i'm not your guy friend so you can ask me that opinion...i don't feel you like that. I think she was annoyed by my answer.
I gave her hints that I like her in some way when we had long talks on the phone.
Later she sent me a tiktok video where someone banters a male friend for venting off on his female friend. I then replied with a friendzone video..she gave a roll emoji...and called me a hater....I said ok. She then ghosted me. I called her by the phone, and she was clearly agitated, and was annoyed...she subtly laughed but not like before...I said in joke "Can't I call if need some advice"...and she replied "I'm not your friend"
I was like ok...sorry to disturb you. Bye
Is she ****ed off cause I said earlier I can't be her guy friend when she asked me about her ex in romantic way and other guys...or is something else in her head?

She became distant now. Doesn't answer my phone calls, i've sent her a message "are we not ok anymore?" she replied after half hour "we're ok". At work she seemed cold and formal, and evidently doesn't want to socialise...should I let her be in her thoughts or maybe go talk to her? I don't want to make it worse than it already is