Hm, i need to think about a6000. It's quite expensive.If you can get the NEX VG20 for your budget, get it. It's a great camera.
Might be a lot for a first camera but it has all the essentials.
Far more important than handycam or mirrorless/DSLR is a microphone
input. If a camera doesn't have that you will need and audio recorder,
which adds to the budget. So that takes out the a5100. The a6000 has
a mic input.
Either the a5100 or the a6000 is a good first camera to start filming some
movies. As you get better and decide to grow you can add a good
microphone and/or audio recorder. Both will make your finished movies
The 16–50 mm, 16mm ,18-55mm and 55-210 lens are relatively cheap. or you could buy this https://nl.aliexpress.com/item/32999279374.html?spm=a2g0s.90423220.127.116.117f4c4d5aaDIr and go for some vintage glass. But can I ask why you are not considering the Lumix G7?Unfortunately, no lenses at all. And i heard sony lenses are crazy expensive.
maybe i need to chose another brand
Heh, that's good advice. Thanks for it.Both the a6000 and the G7 would be fine for a first camera. One
isn't better than the other.
I'm considering that this is a first camera and that you will upgrade
in the future. I suggest you get the one you can afford now, get a
shotgun microphone and think about lenses later. Make two or three
short movies to get a feel of the camera and audio, using light well
and telling a story.
If making movies is something you want to keep doing, then start
looking into a "better" camera and a bigger lens kit. Who knows, once
you start making movies you might find someone who is more interested
in photography and has a great camera set up to work with you.
Don't get so bogged down in the "better" camera right now. Get what
you can afford and make some movies.