Go to your bike shop, and sort through their saddles bin. You want something that will support your sitbones -- that is, wide enough for your sitbone width. Avoid the really cushy and wide saddles as they actuallyl are worse for the flesh (blood flow and nerves) around that area.
You might have to try three or four or more saddles by riding around the block with each one. But often people come away with a good, cheap deal on a saddle that they absolutely love forever afterwards.
If you don't find one at that bike shop or they won't let you test ride, move on to the next one.
Personally, I am a confirmed Brooks saddle fan, but at this stage in your riding, you need to explore other avenues such as the one I suggested... Brooks aren't the cheapest in the world, they do take time to break in and some sensitive little butts can't handle that, and they do need a level of care and protection from excessively wet weather.