I think it’s pretty normal yes. We have a nearly 18 month old who has the occasional tantrum, some days worse than others and nappy changes definitely a challenge, but not too bad overall.
However we did seem to have about a month or so of just continual tantrums, screaming, throwing herself on the floor etc, about 16 months ish (I think, can barely remember what day it is at the moment). So similar age, and it’s definitely better now. Although I’m under no illusion that it will probably get worse again as we get closer to 2.
I follow big little feelings on Instagram. They have some good ideas. I try to do lots of distraction/ diversion, give her something to do during nappy changes, turn getting dressed into a bit of a game where she puts the clothes on her toy bunny first and then will let me dress her, as long as I make a big deal of ‘oh bye bye little foot, where’s it going? Oh I can’t see it, oh here it is, peekaboo foot, now where’s this arm going’ blah blah. It’s a ball ache and sometimes I can do without it but it does at least get us both dressed tantrum free. I also massively pick my battles, I’ve noticed DH will often say no or take things off her almost for the sake of it, whereas I just let empty my knicker drawer onto the floor so I can dressed now (and scoop them all up again later), or let her pull a few wipes out or carry her toothbrush downstairs or whatever small thing she’s decided she can’t live without today - as long as it’s reasonably safe! Loads of outdoor time helps too.
Another thing was she would find it really hard when I was trying to do stuff in the kitchen and want to be picked up, but when we got a learning tower thing (someone made ours but I would have bought second hand if not or there’s an IKEA hack) so she can stand next to me and mess with some pasta or whatever, then that reduces them too.
If I do need to take things off her I find if we say bye bye to it and then immediately let her do something she likes (like pressing the light switch or something) it averts a tantrum most of the time. Not much I can do about the car apart from fob her off with snacks which isn’t ideal.
Sometimes lots of talking about what we’re going to do and what will happen next helps too.
Sorry if you didn’t want loads of ‘advice’ thrown at you - just stuff that’s worked for me. But if you just needed to hear that it’s normal and is really shit then can definitely say that too. I hope this phase passes quick for you.