2004 Buick LeSabre issue

My car just started having this weird issue.
Some times it starts right up the other times I
turn the key forward and NOTHING!! The dash
lights go out but slowly come back on the
keyless entry won’t work as well as the
windows won’t roll up or down then after a
few minutes it cranks up also when I drive it a
little while the traction off light comes on as
well as the security light and the radio will
shut off with the fuel gauge then it’ll come
back on The power isn’t the same