Possible?

I play 1 match per day, with no warmup, practice or anything, NO Time! (cuz of study-assignment )
I am silver 1 now, is it POSSIBLE to climb up if I keep playing like this? Or should I just Leave It?

No

u can, if u wanna improve longtime its fine. just focus on improving not upranking

1 MATCH PER DAY? NO WAY LMAO

plz enjoy game

eventually yeah, you'll improve but by that time you might've switched games already. if you actually really want to climb I'd spend that time practicing some days and playing a match some others. Spend a day in the range, practicing (I recommend Kaboose's routine, you can find it on youtube), then play a couple deathmatches. The next day play a match thinking of everything you're doing right and wrong. Also, watch some Youtube videos on crosshair placement, positioning, VOD reviews and other stuff that might help you get better. It's possible to do it with one match per day, you're just gonna have a way harder time

Don't care too much about the rank, just enjoy the game and focus on improving your game while you are playing and you will rank up eventually

play on singapore servers then, cause they the most wholesome people, even if u bottom frag they dont give a shit

Most likely no but depends if you're playing with (good) friends or not.

1 match per day? Sorry that seems pretty hard.