Most Bulgarian women on Sesile do look for a husband, but probably 30% seek just chat online and pen pals of their own age from another country and are less likely to be willing to leave their country and settle abroad.
A much larger percentage of Bulgarian women are financially independent compared to their Russian counterparts and are not driven by financially desperate conditions to search for a husband and marriage abroad.
Before eagerly grabbing a ‘bride' for yourself please pay attention to these indicators of the cultural differences between dating Bulgarian women and dating Russian women.
Bulgarian ladies have free access to Europe without a visa and can on the one hand easily find employment outside Bulgaria and on the other hand visit you without fiancée visa complications if you intend to take your relationship to the next level.
Just keep in mind that their motivation for this may not be as pure as you think and you may find yourself wifeless once she has got citizenship/money through marrying you.