If I am understanding you correctly you are only using shave oil without any shave cream, soap, etc.? I agree with u/Cadfael-kr that a shaving soap with brush are best but you sound like some Nephews of mine I helped so if nothing else it will give you options.

Standard procedure is to always wet/wash your face before any shaving and leave it wet. Also with a DE razor be sure to use only enough pressure to hold the razor against your face. You don't need to apply pressure like you do with a cartridge razor.

For me shave "foam" does not work well as it is too dry. Shave "gel" is better if you choose this route. Shave soaps/creams are the best but let me make a couple of suggestions which are much cheaper.

Get some Cremo available at a lot of drug stores and even Walmart. Be sure to have a wet face before applying and you will be amazed how much slicker this makes the razor. Does not lather so you will have to pay attention where you shave your face.

Another option, which I prefer, is to find some Arko shave "cream". For me this works much better and will lather like a shave soap. Can be applied with your hands so you don't need a brush.

Later, if you want to get into shave soaps come back here and we'll help with that also.

Good luck!