disk space keeps getting 100% full, after resize the plan also ?

You may still need to resize the underlying volume. You can do this by following the instructions in the documentation https://www.linode.com/docs/quick-answers/linode-platform/resize-a-linode-disk/

@wafidabdulsamad - Are you referring to the 'Storage' section that mentions 'You have allocated 100% towards disk images'? (In the new Cloud Manager it would say something like: '100% of your 50GB is allocated towards $NUMBER disk images.'

If so, this simply means that you've 'allocated' all 50GB of disk usage to your disks.

In other words, you can split the 50GB of disk space any way you want, between any number of disks.

To find out how much disk space you've actually used, you would need to ssh into your server and run the following command:

df -h

The output would look something like this:

Filesystem      Size  Used Avail Use% Mounted on
udev            488M     0  488M   0% /dev
tmpfs           100M   12M   88M  13% /run
/dev/sda         24G  1.6G   23G   7% /
tmpfs           499M     0  499M   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           499M     0  499M   0% /sys/fs/cgroup
tmpfs           100M     0  100M   0% /run/user/1000

The 'Avail' column would show you how much available space you have left on your /dev/sda disk (which is likely your primary disk).

You could also run the df -h command using the Lish console:

https://linode.com/docs/platform/manager/using-the-linode-shell-lish/