Of course this thread is full of humblebrags. Surely if your evenings are so chilled out you could give OP some tips to how you achieved that, rather than coming in to make someone feel more shit than they already do.
OP, it gets easier. My DD is nearly 6 months, but luckily she is a decent enough sleeper so from 7pm, that's when I get my "chill" time. Except, it really isn't chill time. It's usually me being absolutely exhausted from the day and too tired to move but having to tidy, clean, wash bottles and get the dishwasher and washing machine on the go, all of that stuff. Love Island is my treat! My baby only naps for 30mins at a time during the day so getting anything done is nearly impossible- by the time I've made food and ate it, she's awake again! It also doesn't help that she's almost confidently crawling so I can't leave her unsupervised.
OP, give it a few more months and your baby's bedtime will be earlier, they'll start to sleep more consistently and you won't be so anxious about it. I know it's really tough, my DD at that age was still not sleeping earlier than 10pm and we never really got any time to ourselves.
Tonight if I was you, if someone else can take the lead on the baby stuff, run yourself a nice bath and get a good book on the go. It's important to take opportunities for you to look after yourself, too. It'll get easier!
(Also for those whining on about toddlers being worse, OP didn't ask about toddlers. She asked about newborn/young babies. Stop projecting onto the thread).