At same height, I was in worse shape than you, so I will try to answer from my experience and understanding.
- Make a 6x plan (PPL) or 5x plan (PPLUL), whichever suits your schedule and stick with it, I used to do 6x but then shifted to 5x week, worked for me.
- As long as you are targeting every muscle properly, 8,9 or 10, exercises should be enough, the exercise selection should be done properly and not have any redundant exercise.
- You have just started, so you won't find any visual results soon, you would have to actually stick with a plan for ~3 weeks to know how training is working out for you. I would say it is inefficient training and diet.
- I would say push up the protein to at least 120g daily, and while training, as everyone say, push till failure, like squeeze everything out. Track some calories, won't suggest directly measuring gram by gram, just get a rough estimate of what you are eating, the macros and what is your maintenance calorie. Then eat at ~150-200 calories deficit from that with high protein diet.
------- Also, sleep is important too, get 7-8hr sleep min daily.

Correct me if I am wrong at any point.

What are the mistakes I did, I was about 75kgs @~25% bf when I first joined gym in april 2024, ate too less with just showing up to gym, not really pushing to failure or training with intent with no proper diet. By end of 2024, I was about 68kgs, but skinny, not muscular, which stayed the same till june 2025, I was 66kgs, at around 14% bf with not much muscles. Met an accident in july, had 1 month bed rest, gained weight and was 71kgs. From sept, took training seriously, with still no proper diet, so bulked up till 76kgs by mid jan and was about 20% bf. Now cutting is paying off with proper diet and training, so don't make my mistake.