Question

How to decrease language mistakes

Answer 1

to reduce that u  need to learn and uderstand the rules properly... i mean very properly..

Answer 2

if you want to reduce language mistakes or want to make your pronunciation correct just practice that language in front of the mirror regularly and talk to your friends and relatives in that language don't hesitate while talking because when you are learning something there is no need for hesitation

hope these points help u :D