I've been involved in screening applicants for jobs & it's surprising & shocking what I've seen. I've seen badly ripped off sheets from yellow lined pads hand written, sometimes in pencil; dreadful spelling or grammar; huge packets including multi-page resumes from applicants under 20; references from everyone back to grade school teachers; jobs listed all the way back to paper routes & family babysitting; embellished qualifications that make the person look like they ivented the wheel from people who have done nothing more than part time minimum wage jobs; etc.
The best way to go is a short resume. They'll read it. If the employer wants to know more about you, they'll ask. Have a second sheet (or sheets) available if more info is needed. Use references from people who know you relating to work reliability, preferably professionals, even if they only know you socially. Don't lie or embellish. Honesty is a virtue. Adapt the resume, if possible, toward qualifications or experience beneficial to the job.
If you get an interview, show up neat & clean & appropriately dressed as to what will probably be worn at that job. Smile. Be confident even if you don't feel so. Let the interviewer know why they should hire YOU. Nomatter what DON'T BRING YOUR CHILDREN TO THE INTERVIEW. If for any reason you can't make the appointment, call well in advance & be honest as to why. Most employers will reschedule. If you don't hear back, contact them to thank them for the interview & ask if there is anything they need to know. If you still don't hear back, contact them again, and again. Sometimes the squeaky wheel really does get the grease. You're showing them you really do want the job.
Also, don't get discouraged after multiple rejections. Keep trying. Many companies already have someone in mind or end up hiring someone recommended by a current employee. The one who finally hires you could end up being the best one for you. I know, it's hard not to give up. I've been there, but it will happen for you.