Advice from another newbie… I think everyone thinks that some days their writing will feel forced, or it’s not up to scratch, or it’s the last thing you want to do after work. So you are not alone. Accept this and move on (in a a mindful sense, not a defeatist one) because next week or next month your future self will see things from a completely different perspective.
I also feel work ‘feels’ worse just after you’ve produced it. Let it settle and see you how you feel in a fortnight or a month’s time. (I hope this is helpful. These are things I find useful, though everyone’s different).