Hi,
Most of the research I do is checking old maps to modern ordinance maps. I live in the Peak District so a lot of penny shooting on the hills, I suppose over the years people have used the hills as there holiday destination so lots of small change being dropped. Plus I have gained over the years some really nice historical farm land to search .. I’m always on the search for new land to detect, like Terry says there is a lot of new people taking the hobby up, I don’t think this is a bad thing as we are filling the museums up with wonderful artefacts and at the same time removing all the junk from the farmers fields especially now they are spreading green waste.
As to going out and finding bugger all I’ve been there hundreds of times. Just keep plodding on.