Plank
Glue bridges
Mountain climbers
Russian twists
Single leg glute bridges
Rock climbers
In & Out abs
Plyometric jump lunges
Walking pushups
Jump squats
Banana Star
Bulgarian split squats
Single leg calf raises
squats
bicycle crunches
wall sits
Do each of these for 30 seconds. You should be doing these exercises 2-3 times a week. As you get stronger, start doing more of them.
More can be more during the 30 seconds. It can be extending the 30 seconds. Extending can also be doing more than one set of 30 seconds.