Finding the old stuff takes a little more work on your part.
First, do some research to find out where people used to congregate years ago. Sometimes an old area of activity may now be a field. Old houses are good also as long as you get permission and leave things the way you found them. Sometimes you can offer to split your findings with the owner to get permission. Always be courteous and let them know it's just a hobby and your aren't trying to take all the chips for yourself.
Second, check your archives to find areas where houses used to be, and maybe they were torn down to make a road or interchange. Those areas usually have been turned once and are left alone to constant improvement. Your Cibola is deep at 7-8, scan slow. Picnic areas that has streams are good also. Lots of stuff are lost close to streams, as people like to sit and listen. Areas where people like to walk, like around small or large lakes.
Thirdly, one week is not nearly long enough to know your Cibola. It's beeping and you're digging. Start slow. Scan three or more times, scanning slowly and get the sound in your head. Both disc and AM (PP). Move at 90 degree angles to see how the sound may change slightly. Soon it just hits you and tabs and coins have a distinctive sound, though closely the same. The more you do it, the more you will hear that slight distinctive sound.
Fourth, don't get discouraged. You have one of the best detectors made. It's guaranteed for life, so there is no hurry. Even veteran detectorists have days of very few finds. It's like fishing, some days are better than others, and some spots are better than others. If it were easy, everyone would be doing it.
Fifth, have fun doing it no matter what you find. There is nothing better than tuning out the problems of the world to enter your own world of finding whats beneath the ground. Treat it as an adventure. Relax and don't get in the mind set you are going to find a pot of gold.
I usually assume I won't find much, but do the best I can to make sure I scan all I can in a session. If I don't find much, I don't feel bad as I assumed correctly. If I do find something really nice, it comes as a great surprise of something I didn't expect. It's when you go out with a mind set that you think you are going to find wealth that you will become discouraged. All detectors can find treasure, and your Cibola is better than most at doing it. You just need time to create the partnership needed to do so.
Dan