Tenses

Hi teachers,

Context: I go for an interview and the interviewer asks me;

Interviewer: Have you ever worked anywhere before? (in other words, do you have an experience of working anywhere?)

I reply: Yes sir, I have worked in/for xyz company as abc for two years.
or
Yes sir, I have. I worked in/for xyz company as abc for two
years.
or
Yes sir, I have worked for xyz company for two years. I worked
as abc there.

My questions are: are all the above sentences correct? Can I say any of them? or Is it better to use the past tense, because I no longer work for that company?

- Yes sir, I worked for xyz company for two years.

In case I don't have the experience of working anywhere, could I say the following?

- No sir, I don't have an/the experience of working anywhere. I am a fresher.

- No sir, I have never worked before. I am a fresher.

please help me teachers by telling me the most appropriate sentences which can be said in an interview.

Thank you teachers.

Laborious