@mhjahidkb Hi there and welcome to the forum.
Every new player faces the same losing story in the beginning, so it's never a rare thing.
From my very own personal experiences since over 20 years of playing slots, I depend a lot on DEEP KNOWLEDGE of each game that I play! This knowledge helps me to determine which kind of games that suit or doesn't suit my style of playing.
To achieve this kind of knowledge, it is useful to use a spreadsheet to keep track of each game you play - the number of spins done, the results of feature games, and if you like, the Return To Player (RTP) % ratings obtained as well.
It is always best to play with only small bets at first, until such a time when you have the confidence to try and get bigger wins with bigger bets.
It is also a known fact that certain casinos may be good for you whilst most others may be not - this is something how things go in this world! Each one of us have a different level of luck with gambling - some are born with incredible luck, most others are not!
There's no specific strategy to win at gambling - a lot depends on your own knowledge and skill of playing, but also a lot on your own luck!
Follow these tips and hope it'll make a better player out of you in due time!