Are you sleeping enough?
Fitness
Would like to add, are you also eating enough?
I mean I get about 6-7hrs daily. My work schedule makes things hard, and then with overtime being unpredictable it's hard
That's understandable. DOMs from training legs definitely kicked my ass when starting out, but I gradually acclimated.
How many sessions have lead to 5+ days of this for you so far?
The first leg I've done in 7 years was friday. Before that I was just running 4 days a week(easy run, tempo, interval, and long run). I have huge legs but trying these different compound movements makes me realize how weak I am
If you're just stating out, it's not unusual to get sore or even injure yourself. Are you drinking enough water?
Not sure if this is relevant but working odd hours affected my strength, endurance, and energy. I'll never accept a job where I have to wake up at 2am again.
Any new activity is going to cause your body to react. Eventually you'll find recovery is easier and takes less time as your body adapts. In the meatime look into foam rolling, stretching/yoga, and a massage gun if you have one.
I ride a bike on a daily basis and I'm not exactly sedentary aside from that, either.
But I too have found that a new activity can leave me sore for days.
I think it's because of being in good shape already, you can go even harder without noticing on a muscle you might no usually use much.
I was recently sore in my legs a good 3 days, when it's normally just a day. I could barely walk for two of them.
I've found that the best way to get through it is to move through that range of motion more often, unloaded. Stretch, do a handful of air squats, then do them again later, then again later. Not saying you have to work out, but moving thorough it and exposure will help.
Edit: also drinking lots of water will help.
How long have you been going to the gym?
Well I've been going for about 4 months but I was only doing speed training on the treadmill, I starting lifting about 3 weeks ago. I try to get 2 days at least of squats but it's getting hard
At that time frame it is normal
For reference I started lifting with machines first, because injury with the barbells scared the hell out of me, and then one day I was in there alone and finally tried it and it wasn't too bad, I've just got really tight hamstrings
Yeah I can see how it can be intimidating at first, but like you said, it's really not that big of a deal. One trick with tight hamstrings is putting a plate under heel when you squat and as your hamstrings loosen you gradually use lighter plates until you're using none.