Proxigram is like bibliogram. You can use one of their public instances
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Many thanks. This is exactly what I wanted.
https://libredirect.github.io/ has a good list even if you don't use the extension. If you do use the extension, take a second to click the ping button and move to a faster instance, a lot of my defaults were slow.
Also this list: https://github.com/mendel5/alternative-front-ends
Libredirect doesn't list any Instagram frontend though.
That's strange, but it does have a redirect to proxigram feature once installed.
There is also an Android app, I would advise to not login your account as you will get banned, but for looking at public profiles it works (as anonymous).
Barinsta (Simple yet advanced Instagram client) https://f-droid.org/packages/me.austinhuang.instagrabber/
instander exist