Are push, pull, leg routines once a week good enough for beginners to achieve hypertrophy?

Today’s the day I start my fitness journey

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My entire life, I’ve struggled to be consistent with putting on muscle. My biggest problems are keeping myself accountable, having the right form, and staying disciplined. In addition to a lack of knowledge on what to do. I’ve had some progress but nothing that has made me satisfied. I recently stumbled upon a personal trainer who was willing to train me individually for $840/month. I will probably be training with him for about 3 months or more. He is offering a meal plan, knowledge, and a workout plan. Also, his testimonials are pretty good. It won’t affect my budget. I’m just wondering if you guys think this is a good investment to make? So my questions are: 1. Should I hire a personal trainer? 2. What are the benefits of getting in shape?

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