How to write a folder on usb drive after I put .iso image on it?

I want to create a bootable USB and to put drivers folder beside my .iso image. Firstly, I wrote zeroes on my USB drive using this command:

dd if=/dev/zero of=/dev/sda bs=4096 conv=fsync oflag=direct status=progress

, got this output:

1907201+0 records in

1907200+0 records out

7811891200 bytes (7.8 GB, 7.3 GiB) copied, 2188.11 s, 3.6 MB/s

then I unmounted and formatted it:

sudo umount /dev/sda

sudo mkfs.vfat /dev/sda

Then I created a partition on it using

, and got this output in

:

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS

sda 8:0 1 7.3G 0 disk

└─sda1 8:1 1 7.3G 0 part

Then I wrote an .iso file into my USB using

dd bs=4M if=/home/alex/Downloads/Win10_22H2_EnglishInternational_x64v1.iso of=/dev/sda conv=fsync oflag=direct status=progress

command and got this output:

1462+1 records in

1462+1 records out

6135633920 bytes (6.1 GB, 5.7 GiB) copied, 1396.19 s, 4.4 MB/s

As I understood later,

command overwrites partition table, so now my partition is gone. I'm still need to put a folder with drivers on to my USB drive beside

.iso

image. I don't know how to do it, because I can't copy my folder into USB drive, or create a new folder inside it. My partition

is disappeared, and when I try to mount

itself, it says

"source write-protected, mounted read-only"

. I heard I can use

for this kind of things, but is there any other way? I don't know what to do now and where is the problem. Would be thankful for your help.