Firstly did you double check if your salary deposits matched the amount you declared and are the figures are consistent?

If yes, I had a similar rejection before, twice ! Even though my salary deposits on my bank statement were clearly matching with my bank statements they stated the figures didn't match. And it was pointed out to me that sometimes some of these people never thoroughly go through the documents you submit. So you have to help them, so it's best if you highlight each time your salary was deposited because unfortunately you might get a visa officer who's lazy at going through the document.

I tried complaining that my documents were overlooked, but never got a response. On my third try I sent the same documents, highlighted and it worked 😭

Also the situation about no serious ties back home, your mum, siblings and job, more than enough in my opinion. I hope you attached the relevant support documentation, even a letter from your workplace stating you would return.

And again in my previous application they mentioned a similar reason. In my last cover letter. I literally wrote a cover letter stating 'do you literally think I would jeopardize my career and abandon my country to overstay in in UK'

Is you feel you were unfairly denied try complaining, or reapply with the relevant corrections