Replaced the rear seal on pass. Side but a day later its leaking and has play

What is your question?

Hi I bought this truck 2 1/2 weeks ago a few days later i smell burning oil then noticed my rear pass. Wheel was smoking i thought the caliper seized so I got a new one then took the tire off and realized its was the seal im not a Mechanic by any means but after watching multiple videos thought I could handle it I thought everything went well and everything was done the way I watched But none of the videos or anything that I research said anything about making reference marks before you disassemble About A-day later i felt a lite vibration when I was slowing down when I got home I jacked it up and Realise it was leaking again and I now had a lot of play in my hub that I didn't have the night before when I replaced everything I went out and got another seal because I wasn't sure if I would have to replace the one that I just put in I don't know if I can try to work the hub on more with out messing the new seal up worse or should i pull it all off again and redo it