Unfamiliar bass lake

Depends on the water color and clarity. But natural colors are always my first choices. Watermelons, green pumpkins, and white. And something darker like junebug and/or black and blue.

My fist pick is almost always watermelon

Always something moving to cover water.
Spinnerbait, buzzbait, chatterbait or swim jig in a shad color. White, white blue, or white chartreuse.
Square bill or shallow running crankbait in a craw or baitfish color if there is a lot of rocks & wood.

I always end up through a green pumpkin or watermelon worm, sometimes with a chartreuse tail. Alternative is a black and blue craw.

Impossible to answer without knowing time of the year / water temperature and water clarity. Then I’d want to have some basic idea of forage or structure being fished.

Generally, I’d start with something like a Chatterbait in a Bream pattern to cover water. Unless it’s cold or the water is clear and then this would be a bad strategy. Clear water and a swim jig instead.

So long as it isn't late fall/winter/early spring where the water temps are super low your best bet is to find places that will typically hold bass, put your trolling motor on high, and cover a lot of water til you find a pattern. In this case I'd start with a crankbait or chatterbait (one white, one chartreuse) around riprap, piers, bluffs, laydowns, or moving water. If you're trying to find bass in the cold temps you're in for a tough time since you can't cover much water to locate the bass (but the same spots should still hold some fish). Most cold weather bass want a slow presented minimal bait like a shakyhead or a flat crankbait fished hardly cranking the handle on a slow speed reel.

Texas rigged tequila sunrise Zoom worm

I like to scan the lake even if it for an hour just to get an idea of the depth, water clarity, hard or soft bottom, grass, structure, and temps.

Then I would go with the bait that I feel would catch fish.

Would not waste my time with top water on a bluebird day. I know it is usually high pressure, so the bass usually get in the grass hiding.

Cloudy day when a front is rolling through top water would be a good choice.

Just depends on all the factors before I choose a lure.

If nothing hits a white chatter bait in 30 minutes of casting, it’s going to be a long day.