Family Reunion Visa and looking for a job before arriving

You are right, getting the residence permit and then work permit will probably take several months (during which you cannot work).
On the other hand, getting a work permit on your own merit is difficult (the employer has to show that you are not taking a job that an EU citizen could do) and many employers shun the extra risk and effort to sponsor such a visa.
If I were you, I would wait for the family reunion work permit and utilize that time to improve my German - your job chances very much depend on it - and only apply for jobs after that.
Your idea that you can find a job from abroad, get a work permit and start work within two months is anyway unrealistic - a typical German company takes that long from application to decision whether to hire you or not.

A third option, and the best, would be to tell the truth. Explain your situation and qualifications. If the potential employer has real interest, they might say that they are interested in hiring you once you have your visa situation settled. Since they cannot know if or when this happens then they will probably not make a binding job offer. But one can surely find out if there is interest and any hope of working for that particular employer. The two options you suggested sound doubtful. To start off saying you have a visa when you don’t actually have it is nonsense. This might actually mean losing the trust of someone you might have gotten work from once you do get the visa. And like Beppi mentioned, the paper work and difficulties involved with hiring a non-EU citizen that doesn’t already have a work visa is complicated and difficult. Best to use the time until your visa is granted to improve your German and look in the internet to see what potential jobs are available in your field.

Thanks. It was never my intent to lie. I registered at talent.io site for hi-tech job seekers and there they gave me only 3 and I had to choose one. Of course I'll explain my situation on my resume and Cover letter. Thanks.

I have never heard of talent.io and they are certainly not one of the bigger and better job portals.
Try Stepstone instead - that's where the action is!
Or send unsolicited applications to suitable employers. This is quite common in Germany and shows that you have motivation and initiative and did your own research, which is very valued here.

Hello

I am a South African national, joining my husband in Germany (who is a SA national as well) on a reunification passport. I am a professional nurse by profession, and I am enrolled with an agency and recruiter for B2 language certificate. I will only get placement as a nurse in Germany once I am done with B2. I would love to get an unskilled job when I get to Germany while waiting to finish my course so I don't sit around at home. Will this be possible? What will be required of me?

@lona0033 You resurrected a thread that was dormant for nearly six years!

If your FRV allows work (which is usually the case), you can apply for jobs once you arrive (or even before).

    @lona0033 You resurrected a thread that was dormant for nearly six years!If your FRV allows work (which is usually the case), you can apply for jobs once you arrive (or even before).        -@beppi

Having the B2 certificate is a legal requirement for nursing. And although there is a shortage of nurses and foreigners nurses are welcome to work in Germany, the recognition of their academic qualifications often takes time. I know an experienced nurse from Argentina who waited in Germany for 18 months before they certified her nursing credentials. It is not always as simple as people expect. But with a family reunion visa one is usually allowed to work, so other non-nursing jobs are likely OK while you wait.