Bar options for birthday party that won't be too crowded?

Hi all! Hoping you can help me decide on a place for my birthday party on an upcoming Saturday night. I'm estimating about 25-30 people, and none of the places that do private or semi private rooms within my budget are available the day I need.

So, I'm wondering what are some bars with good vibes that won't be so crowded on a Saturday that about 30 people could comfortably mingle together? Is this a unicorn? Should I just host at home?

Preferences: North or northwest side location, not clubby or loud, decent variety of beverages. Bonus if food (like cake) can be brought in, but not required.

Thank you!!