If you've cooked meat, put it on your hot bar, select it and do whatever the PS4 equivalent of right click is ...if you have trouble still, let me know and I'll jump on my copy to sort it out for you.
To amplify what Bart said, I found the easiest way was to dig a trench 8 blocks long and fill it with water. Apparently the water will have an effect 4 blocks around it so hoe the surface for 4 blocks each side and plant your seeds. 8 blocks for the water is just a bit OCD'ish on my part as 4x2x8 = 64 which is a complete stack of seeds.....you can obviously also plant at the ends as well
Don't forget to chose a communal house build <nudge>