hi vivek,

see now a days it is quite difficult to secure a job in any field , now to get teaching or lecturer position in any government institute you have to apply in recruitment process. so basically job hunting a long process and it would take time which can not be predicted. due to corona pandemic recruitment program is at halt , so you must make resume and make profile if websites like naukri, times job, linkedin, indeed like platforms. also apply for private colleges which has similar course like your back ground.

now that you want earning you may join online teaching program of many private institute or coaching center as well.

best of luck for your future endeavor.