Does annyone have tips to get bether at PUBG

I recently bought pubg and i am horrible at it. have anny tips? for example what guns to use and stuff like that

first watch streamers, and also play some other games for shooting experience. before playing in the game, play in training mode. for starters smg is a better choice, for example uzi. play the game again and again, till you feel yourself better, i give you advice but i am horrible too :D