2007 Chrysler Sebring

I have a 2007 Chrysler Sebring. My check engine light came on & when I had driven more than an hour my car started bogging down 7 sputtering & I barely make it up the road. I thought it was bad gas & have been doing gas treatments with every fill up to dry up water if its in the gas. So I got it diagnosed & it was the o2 sensor according to the reading from the machine it was put on reading bank 1 lean 2. Ok so to mke a long story short both oxygen sensors were replaced & the check engine light couldn`t be cleared out. Now my car is doing the same exact thing only more frequent & worse. Also to let you know once I sit for a few minutes after turning off my car it will restart & continue on but ends up sputtering again! I`ve had the fuel line checked, numerous other things. Do you know what might be wrong?'.