nostr:npub159c9wlrpkd72whzeu9a3s5wgpdgrah3mkdxm3w8uj9dglt6yt9zqvj74e9 , we do provide APKs from our website. You can find the link on this page:

https://vivaldi.com/android/

Glad you like Vivaldi and I agree with you that one must be careful.