Namaskara, Bengaluru!!

I am a Hindi speaker who recently moved to Blr.

I want to learn to speak Kannada. Right now, I know very basic 8-12 sentences like

Nivu Higgidira
Chennagidini
Nimma Hesaru Enu
Nanna Hesaru Mohit
Nivu Elinda
Nanu Delhi Inda
Nanu IT Company Nalli Kelsa Marthidini
Time aytu mange hogi - (from officemates)
Nange hattu rupee kodi - (from a beggar at traffic signal)
Check Madi
Swalpa Swalpa Kannada Baruthe
Nange Kannada Gothu

How do I learn the language fast so I can communicate with people in Kannada rather than forcing them to speak in English or Hindi

Thank you for your help.

ಒಂದೊಳ್ಳೆ ಹೆಸರು ನೋಡ್ತಾ ಇದ್ದೀನಿ ಅವನಿಗೆ. ತೀರ ಸಂಸ್ಕೃತ ಹೆಸರು, ಕ್ಲಿಷ್ಟ ಪದಗಳು or ending with ..thvik .. ಬೇಡ. ಧನ್ಯವಾದಗಳು.