First Cycle Advice

Hi,

For the first time in my life I have finally committed to the gym. Unfortunately, it’s taken me to 44 to do it and most things I read suggest that my body does not want to improve like it once did. I’m 6’ 2”, 240lbs (down from 340lbs 2 years ago) and I now train 5/6 times a week with a push, leg, pull, leg, upper split. I’m not carrying much muscle and am still trying to lose weight and sit in a 1000 calorie deficit a day but keeping my protein at 200g per day. I am getting stronger and building muscle but I feel like I have plateaued a bit.

Do I need to lose the fat first before I start or is there any benefit to doing it now? I have no issues with injecting but would really like to start on one thing first until I can see what my reaction is like.

Thanks in advance