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It's hard to track progress if you are changing things.
Pick a set of exercises for your PPL and apply a progression scheme. Do that for 4 months. Then change your rep ranges and maybe swap out a few stale exercises. Do that for 4 months. Keep repeating that and you will start to see results, have information about your lifts and start to understand what training styles your body responds to.
Having a spotter is a good idea if you are maxing out but really, you shouldn't be maxing but maybe twice a year. And maybe when you first get started so you know what failure feels like, like gun to head can't do one more failure. After that, leaving a rep or two in the tank on each set is fine(maybe don't amrap on squat and benchpress for example). If you practice the movement with light weight, add weight slowly and know your limits you'll be fine.
In my opinion one needs to experience lots of different splits and exercises to fully understand what works for them, so be patient, this is the marathon of marathons. It will take time to learn what exercises and rep ranges work best for you.
Also, look into planning out your training schedule longer term, where you plan to go through different cycles and rep ranges. What is your progression scheme? As for being sore, you either aren't training hard enough(do you do rpe or rir?) but most likely your form isn't necessarily bad but you aren't focusing on the muscle you are trying to train.
Deadlifts aren't as dangerous as people want you to believe but form is important. Stiff leg or Romainin deadlift are good too, with slightly less stress but still, watch a bunch of videos on form, keep your back flat, chest wide and up, and pull the weight. Start with some light weight and practice form, just like on everything else.
Do you track your lifts in any way that you can see changes in weights and or reps over time?
Mine was a cool skateboard dude who did the most amazing grinds and flips
Thank you for all the info. I will be upgrading the lights.
Is the light I have good for anything or just trash?
Thnaks, I will check those out.
I will get a better photo of the trunk. I'm sad it won't get any taller but good to know, thank you.
Not two pictures but here is one.
I get that this has multiple in one pot. Will the short stubby trunk grow taller over time or do I need to do something to help it along? Maybe that's as tall as it will ever be.

Do you have a recommendation for a better light? I figured this grow light would be good but I'll trust you when you say it's gimmicky.
Thank you for the reply and link. I don't know how I missed that forum post in my search. 🙏🙏
My NewPipe hasn't broken for a significant time in quite a while, it's good to go in my experience
Good to know, thank you for the heads up.