I wouldn't call playing at ranks 11-12 being 'stuck'...

Reaching the top ranks with an aggro War deck in the current meta is very impressive imo. Congrats!

When posting on Hive people will look favorably at referencing the source of the images you use, when they are not your own. You should look into putting a source link under the card images:

@qurator/standard-image-sourcing-for-the-qurator-project

Also it would be nice if you would post a link to the current deck you're using. Could you edit your post with that? Thanks!