Performing exercises with the correct form is paramount so that you remain injury free and get the most out of the movement. Below are a curated list of exercise demonstrations from trusted professional sources.
Dumbbell pullover - https://www.muscleandstrength.com/exercises/dumbbell-pullover.html  (perform this basic motion using the floor )
Flies - https://www.muscleandstrength.com/exercises/dumbbell-flys.html (perform using floor as an alternative for the bench)
Pullover - https://www.muscleandstrength.com/exercises/dumbbell-pullover.html  (perform this basic motion using the floor and use kettlebell as alternative )
Basic squats 
Jump lunges -
Nordic curls- https://www.muscleandstrength.com/exercises/nordic-hamstring-curl-bodyweight (use chair or any structure you may have at home to lock your heels)
Squat + knee to elbow 
Lunges - https://www.muscleandstrength.com/exercises/dumbbell-walking-lunge.html (perform in a stationary position instead of walking)
Rdls- https://www.muscleandstrength.com/exercises/kettlebell-romanian-deadlift (keep same form using dumbbells instead)
Calf raises -  https://www.muscleandstrength.com/exercises/bodyweight-standing-calf-raise.html (perform holding dumbbells for added resistance)
Hip swings- https://www.muscleandstrength.com/exercises/kettlebell-swing (use dumbbell as a replacement for kettlebell)
Kettlebell