Pokemon Sword and Shield walkthrough: Route 7 and Route 8 - Pokemon Sword and Shield guide walkthrough: Everything you need to become the Champion of Galar | GamesRadar+
Route 7 | Game of Guides
Pokemon Sword and Shield Route 7 Walkthrough - SegmentNext
Route 7 - Kalos - Serebii.net Pokéarth
After a couple of days of chaining/hunting Shiny Porygon, I managed to get 3! I transferred them to Sword/Shield and evolved them. : r/PokemonLetsGo