Most installers aren't open about doing installs to people they don't already know because Nintendo sends C&D letters to people who advertise it and try to set up honey pots for people they have heard do it in secret. Best chance you have is to ask a friend who has a history of doing installs to do it for you or find someone who open does installs for another console (e.g x360) and ask them if they can do you a Switch oled install.