If the oil is coming from where the fuel pump connects to the block, the gasket isn't sealing. Try using some non-setting gasket sealant (Blue Hylomar etc) on both sides of the gasket and reinstall it - make sure the surfaces are very clean and smooth!
Mine has two paper gaskets either side of plastic spacer( on other engine this plastic spacer was fibre), metal plate ( same shape as plastic/fibre spacer, so when tightened it applies pressure to all of plastic /fibre spacer and gaskets, not just the two from pump itself), smaller gasket to pump, then pump, heres photo, yours doesn’t seem to have metal plate. Never had issues with oil leaks around pump with just paper gaskets. Did notice paper gaskets from Piezasauto were of a far thinner inferior quality paper than those I sourced from Paco Lugo.