How good is invidious?
The experience, at least in my case, has been the same. Invidious is very hit or miss due to YouTube’s methods of blocking connections, one day my instance will be working perfectly fine and the next will drop some obscure error. While my instance is technically public, it is only exposed to 1 country and even then hardly gets any hits off of my reverse proxy.
Thankfully they tend to update pretty frequently when YouTube starts acting up on a large scale.