Alvina Moskvinova you said you applied from Poland earlier, and now you say you weren't when you paid? As far as I know the payment is made at the same time the application is submitted? You need to provide the complete story timeline/circumstances in one shot to get the best advice.
Alvina Moskvinova is Poland a walk-in consulate or are they on the e-visa system? I'm thinking evisa since you didn't hand your passport in during submission. If that's so why not submit the requested docs online?
Just answer the questions logically. If you aren't working then say so, or put N/A. Write a brief cover letter outlining your plans. Of course put your Thai number/contact info. If you plan to go abroad in 3 months then say so. Leave guarantor blank or put the muai Thai gym etc etc. Put entering by land. If they want proof of your Thai address they will ask for it. Your proposed entry date is your proposed entry date.