I'm not trying to be a dick or anything but here's my advice.
Stop what you are doing right now. Do not practice anymore kicks or punches on the heavy bag.
Your technique is all wrong and you're only teaching yourself bad technique that will be very hard to change if you actually do start to train.
Your kicking with your foot and not your shin. You'll break your foot doing that in a real fight. You also aren't snapping your punches or your kicks and your combos are bad.
If you're serious about training then stop what you are doing and go to an actual gym so you can learn proper technique because right now it'll take awhile for them to unteach what you taught yourself and for your to learn it the right way.