Low confidence in the platform? It's been around a while, but has also changed hands a few times and is owned by Smugmug now anyway, and I've got the impression that it is stagnant.
YMMV but I've been a happy Flickr customer for over a decade. They haven't modernized much so the site looks and feels old, but their pricing is very fair and there are still a lot of folks on it.
I have considered selfhosting myself, but it's a lot of work and features like "auto upload from my phone" and "privacy guard for pictures of my kids, but make login-free links for grandparents" are very nontrivial.
i think it's a wrong impression, try it.
it's not super social; for this you can try instagram. but some flickr groups are just amazing. i am learning so much, training my eye...
