Return is lower when filing jointly with spouse

This is my first time filing taxes with my spouse jointly. However, I noticed that the return went down by about 70% as soon as I included my spouse’s income. Is that ok? Our joint incomes are still well below $200k a year.

 

I have always heard filing jointly will be best but in my case is affecting the return by a big amount. 

 

Is it better to file separately?