"Shortages Have Destroyed My Job As A Barman!" - A Nairalander Cries Out

Hey fam, do any one have any experience as a bar tender/man that might help me by giving me clues on how to survive on the job. In just my first 2 months the shortages I have incurred has passed my 12k salary. Any advice will go a long way cos I gats survive and this job is the only hope I have of not starving to death yet. Please!!!