lightly, casually

I eat breakfast.

私は朝食を食べます

I eat a light breakfast.

私は朝食を軽く食べます

I eat a light breakfast with some fruit.

私は果物と一緒に朝食を軽く食べます

I eat a light breakfast with some fruit at home.

私は家で果物と一緒に朝食を軽く食べます

I eat a light breakfast with some fruit at home every day.

私は毎日家で果物と一緒に朝食を軽く食べます