I've been flying planes & helis for 20yrs now, set it as best you can & hover a foot or so off the ground &
practice slowly moving around! if the unit is moving to one side or acting skittish it's the settings not you!
a properly balanced & set drone will stay fairly still & only wander a slight amount, keep your focus on the
rear of the drone & keep it always moving away from you when practicing. Everyone including myself has crashed
dozens of times, it's normal. you tube may have some instructional vids. good luck & enjoy.
PS horizon hobbies & Tower hobbies have parts, or go to hubsan.