Don't forget bench press. They're the holy trinity.

Start with 5 burpees inside a minute then rest, 2nd minute kicks in, repeat. Do this 10x. Gradually add the number of burpees that you can do in 30 seconds. The standard would be 10 burpees in 30 seconds then 30 seconds rest.

I stopped running after just doing burpees but if you're so inclined, I would suggest doing the burpees first as they are more intense then cool down with running.

What's your workout and diet plan?

I say you've plateau'd. If you're on a decent diet and hitting your macros the only solution is to ramp up your activity. Either you do 8km 3x a week or do 5km 2x a week with a 15km on a weekend. Or change it up every week to shock your body. Do tabata sprints 3x a week, then go back to your 5km 3x a week the next. Me personally, I would do 100 burpees 3x a week for cardio and tabata sprints the next week.