Does it describe what kind of spouse in the chart?
Yes, generally. But I expect more shouting and intensely heated arguments, just like your mixed luck with other siblings.
sometimes I think that marriage isn't in the cards for me.
Your concern is justified here. Marriage luck is typically influenced by spouse sector, but we should look at related sectors too: travel, happiness, property, children. All these sectors are not exactly free from harmful influences. So I guess managing relationship hurts more than money.
Not saying that you should give up on marriage, but it may look a bit unconventional. Even somewhat quirky or eccentric by society's standard.