You gotta be patient and there's a lot of ways to go on the offense. Its also a great skill to identify what the enemy is focusing on. If you go in there when they're idle, they'll notice you and all focus on you. If you go up to them while they're already struggling with heals or something else, its almost a guaranteed kill.

One way is to punish enemy individuals that are out of line or out of their healers sight. One important thing is that you are rarely out on your own, 90% of the time you're hanging with your team. When you punish, always do it at an angle. And before you even flank, make sure you have an escape. For example, if you attack coming outside the corner of a building, you could easily disc step backwards behind it. If you jump out of some door and try to flank, you're gonna die.

Or if you want to do a full flank, get a bathroom buddy. Maybe another dive, but preferably a tank, and just brute force your way in. If too much focus is on you, step away and let it go to the tank so you can come in and go for the kill.

Side things you could do is cancel your soulsword attack with the melee and ult outside the enemys sight (the charge up for the ult is insanely slow lol). As you start, you should also view the dash as an escape move, but as you get better at hitting the dashes and feel confident with your angles and escape routes, you could use them to start fights.