Depends so much on the baby, and ignore people saying that it only gets harder - many children are easier as babies, some not. My ds1 and ds3 were grumpy babies who needed lots of attention - DS2 and ds4 were pretty placid and liked food and sleep. We also all experience being a new mother in different ways - someone with tons of baby experience, a supportive husband and parents living around the corner who take the baby for an afternoon or two will it much easier than a single mum with a colicky baby and grumpy neighbours. Some people love the baby stage, others find toddlers so much more interesting.
And you're doing it in a lockdown with less interaction and support than most new mums through history, give yourself credit, and also find opportunities to give yourself a break too - if you have a partner, make sure you're also getting some time off.
My two more simulation-seeking babies got easier with each milestone - the more they could do, the happier they got. It may be coincidence, but they're also notably bright ahead of their age, it was like they got bored of being babies. DS3 is still very sensitive, busy, and a lovely but tricky child to manage, but ds1 is now 8 and quite easygoing, so it isn't forever!
One thing I would say though as a mother of 4 is that babies do get used to what you do often, and most of us do complain that our eldest children are always worst at entertaining themselves because we've always done it for them. I'm a bit of a hippy and have never left a baby to cry but with my later children I've realised the benefit of letting them whinge for a minute, in a sling or in a bouncer next to me, while I finish doing a job around the house, or just lying there on a mat that I move around the garden while I do some weeding or exercise and chat or sing to them while I go. They'll get bored really quickly if you're on a phone or the computer but will often happily watch physical tasks for a while, and it gives you time to do all the jobs during the day and when they're awake and then have some leisure and rest when they're asleep.