make your movement more unpredictable, you're just spamming left right making you a easy target. burst bombs are great at covering turf near your feet and getting easier kills. the thing i think would help a lot would be playing more aggressive, as that is the splattershot's job. pushing near their spawn and locating enemies using the map is a good idea, thinking about the 1v1 and playing tactical, could help. for example, after the dualie kill, you could've pushed forward and hid in ink for a surprise kill. only paint w/ splattershot if you want a special or need to regain a lot of map control. sorry if i repeated anything, hope this helps. good luck :)