Smart bidding starves on a single metro immigration budget
Automated bidding needs a steady diet of conversions, and one practice in one metro rarely supplies enough of them.
Immigration keywords are expensive and the qualified volume is thin. Split a modest budget across six campaigns and every one of them learns from almost nothing, which is when you see wild swings in cost per click week to week.
Two fixes work. Consolidate: fewer campaigns, more signal in each. And count a conversion that happens often enough to teach the system something, such as a call that lasts past a threshold you set, rather than only a signed matter.
Start with tight keyword lists and manual control while you learn what the search terms actually look like. Move to automated bidding once the conversion count is steady, not on day one because the interface suggests it.
Resist the urge to add campaigns every time somebody has an idea. An account with three well fed campaigns beats one with nine that are all guessing.