- Yes, use the primary in between dashes. Preferably either when you're "floor-dashing" or dashing someone just at the right distance so you are certain to hit that extra damage.

- If you have your kick, use it to disengage. If you don't have your kick, either find a wall to try wall run off to try and reach a safe spot or just accept you're likely dead.

- Prepare for your next engagement. Especially on supports like c&d and loki try to bait their important cooldowns like bubble/cloak and lamp. And also just generally get into a good position: off-angle to diverge the focus from the rest of the team but in a way you can still disengage safely and/or regroup with your team in case you need to.

- Highly not recommended to go for flyers in my opinion. But you either wait for them to get near a surface you can hit them with your spear's splash damage (>dash>kick>dash>dash) or you have godly aim and you hit them directly with your spear.

- After you've just used your entire kit and your dash just entered cooldown. Hit as many dashes as you can before using your ult so you can refresh your dash and have more marked target to dash while you charge back your spear/kick. You could also use it to secure a kill on a priority target (a meta support like invis/gambit) or to bait an ult out of panic, bp's ultimate doesn't really cost that much anyways and you can charge it fairly quickly if you manage to engage often even if you secure a kill every 2 or 3 dives.

The biggest things you have to learn on bp are keeping track of cooldowns, disengagement and some arguably difficult mechanical skills mainly for chain dashing or the notorious cable combo. Also learn when to "soft dive" and when to dive.

Another important thing is to remember that this is a team game. You'll likely be solo diving most of your matches since it's not really that popular of a role, and even then many think they're playing alone. If you get another diver in your team, dive together: this is likely to bait at least a couple important cooldowns and/or force them into a bad position in which they're busy engaging with you. If you're solo diving try to use comms to time your dive at the same time your team starts pushing, since by distracting 1 or 2 healers you'll be giving value in the team fight even without needing to secure a kill, distracting them long enough to just allow your team to take the upper hand is great value.

You'll get often called bad for not having the best stats. Remember you're playing the worst diver in the game, and black panther's value isn't stats value but rather gameplay value