I am now using Right Gallery. It looks like a fork of SMT gallery. It is free open source no ads. https://play.google.com/store/apps/details?id=com.goodwy.gallery
Goodwy seems to be forks of SMT apps https://github.com/Goodwy?tab=repositories. Open source, no ads, no trackers and no internet permission, unfortunately you have to either compile yourself or download them from the play store. https://play.google.com/store/apps/dev?id=8268163890866913014
I’ve been enjoying “Anytype”
Vandetta is more up to date. That is what I use now.
I enjoy using Actual
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Also an anytype user. I like it both on PC and mobile phone