How to solve the problem of devoured space on a flash drive?

Question

macOS

I have a 30gb transcend flash drive.
Actions:

• I write to it, say, 4 files with a total weight of 12 gigs.
  
• The properties indicate that 18 gigs is free. OK.
  
• I delete these 4 files.
  
• How much free space should there be? 30 gigs, but the properties show that there are still 18 of them.
  
• I throw another file weighing 3 giga
  
• Free space is reduced by 3 gigs, now it's 15.
  
• I delete this file and check how much is free now
  
• And again 15!
  

As if the files I delete are not deleted, but simply become invisible.
What do I end up doing?

• Formatting a flash drive
  
• Free space is again 30 gigs
  
• I repeat all the above manipulations
  
• Same result
  

With these files, with any others.
What the hell? Flash drive problem?

Additional info:

• I work on mac axis
  
• Formatting with Disk Utility.
  

Decision:

Emptying the trash after each removal from the flash drive helps.
Thank you all for your help.

Answer 1

How to solve the problem of devoured space on a flash drive?

Don't use macOS. This system thinks it's smarter than you and doesn't actually delete data.
For example, torment with free space on the internal disk was described here
https://habr.com/ru/company/parallels/blog/351128/
Do you have a flash drive in which FS? Try FAT32, maybe it won't show off like that.

Answer 2

15432 An absurd response from an Apple hater. You can not compare a hammer with a chainsaw, you get a cherry.
Half the world sits on poppies, including developers and do not complain.
MacOS is really peculiar, but that doesn't mean it's wrong.
Mac is a different system. Just remember it.
The flash drive should preferably be in the exFAT system. Not FAT32, not NFTS, but exFAT . For example, he will read Fat32, but will not write it to such a flash drive. -Because because.
1. Mac deletes files first to the trash. Moreover, if you get a flash drive, on it (if in simple terms) there will be a place reserved for those files. This is done so that there is no "Oh, I deleted it by accident."
Resp. just empty the trash.
2. Turn on the display of hidden files and delete the .Trashes folder from the flash drive manually.
3. Delete files bypassing the trash. Command + Option + Delete. (On older keyboards it's Command + Alt + backspace)