lights for bicycle

I haven;t even searched yet,want some opinions first.
Just started riding again,mainly in the day,but a few evening times,recreationally.
I see bikes with flashing lights,blue,white..etc.

What do you consider a good set-up?

Basic white in front,red in back.Solid or strobe,led or other.Rechargeable or regular battery.Pressure or manuel swith?

Cheaper is always better for me,just want some suggestions on what to search for.

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lights for bicycle