VB Ubuntu says disk full but not

I am running Ubuntu 22.04 via VirtualBox from win11. Recently I had to extend the space allocated for the machine. I did that using gparted util. It was fine for a while but now I am getting warnings about disk space being full.

There is no way my data are 100GB. Disk manager shows disk full but when it counts data, its only 30GB (although in the preview it is full - see screenshots).

I tried sudo resize2fs /dev/sda5 but it says: there is nothing to do.

Here is gparted screen:

Here are outputs of several tools:

df -h:

FileSystem           Size  Used  Free Use% Mounted totmpfs                676M  1,5M  675M   1% /run/dev/sda5             97G   92G  329M 100% /tmpfs                3,4G     0  3,4G   0% /dev/shmtmpfs                5,0M  4,0K  5,0M   1% /run/locktmpfs                3,4G     0  3,4G   0% /run/qemu/dev/sda1            511M  4,0K  511M   1% /boot/efiShared               953G  416G  538G  44% /media/sf_Sharedtmpfs                676M  108K  676M   1% /run/user/1000/dev/sr0              59M   59M     0 100% /media/user/VBox_GAs_6.1.342

parted /dev/sda print free:

Model: ATA VBOX HARDDISK (scsi)Disk /dev/sda: 106GBSector size (logical/physical): 512B/512BVolume table: msdosDisk Flags: Number  Start  End   Size  Type       FileSystem   switch       1024B    1049kB  1048kB              Free space 1     1049kB   538MB   537MB     primary   fat32           boot       538MB    539MB   1048kB              Free space 2     539MB    106GB   106GB     extended 5     539MB    106GB   106GB     logical   ext4       106GB    106GB   1049kB              Free space

lsblk:

NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTSloop0    7:0    0     4K  1 loop /snap/bare/5loop1    7:1    0  63,9M  1 loop /snap/core20/2105loop2    7:2    0  63,9M  1 loop /snap/core20/2182loop3    7:3    0  74,1M  1 loop /snap/core22/1033loop4    7:4    0  73,9M  1 loop /snap/core22/864loop5    7:5    0 262,5M  1 loop /snap/firefox/3779loop6    7:6    0 266,6M  1 loop /snap/firefox/3836loop7    7:7    0 349,7M  1 loop /snap/gnome-3-38-2004/143loop8    7:8    0   497M  1 loop /snap/gnome-42-2204/141loop9    7:9    0  91,7M  1 loop /snap/gtk-common-themes/1535loop11   7:11   0  40,4M  1 loop /snap/snapd/20671loop12   7:12   0   452K  1 loop /snap/snapd-desktop-integration/83loop13   7:13   0  39,1M  1 loop /snap/snapd/21184sda      8:0    0  99,1G  0 disk ├─sda1   8:1    0   512M  0 part /boot/efi├─sda2   8:2    0     1K  0 part └─sda5   8:5    0  98,6G  0 part /var/snap/firefox/common/host-hunspell                                 /sr0     11:0    1  58,7M  0 rom  /media/user/VBox_GAs_6.1.342

Do you have any idea why the free space is not available (marked as used)?