I was laid off about five years ago & unable to find a decent job I started doing my own thing to stay busy. Recently, I also gave it a name. My questions are multiple.

After I was laid off about five years ago & unable to find a decent job I started doing my own thing to stay busy. Recently, I also gave it a name. My questions are multiple. One of my clients typically gives me a 1099. However, this year they did not. They are listed on Turbo Tax as they typically provide a 1099. How must I list their payments this year since they did not issue a 1099 this year & thus there is no number to enter on the Turbo Tax line?
Question two, do I really have to continue listing all of the 1099s individually every year (there are many) & can I not just list it as income as I do on my records?
Question three Is again, can I not just list the total income from all sources (1099 & not), especially as some of the 1099s show more income than I actually received during the year & some show less & then of course there is income that did not even generate a 1099 that I have?