. I'm thinking Youtube's system has given up on my channel since it's 3 years old and never even broke 100 subs. Anyone else have an issue like this? Were you able to get out of this rut?
That's actually a very interesting observation. Sorry to hear you are having this conundrum, but it does make sense from an algorithmic perspective. The algorithm is designed by programmers with management direction. What's the key thing for YT management? Growth! Growth of the platform, user base, revenue, share price, income, etc. It makes sense that the algorithm is programmed to favor and promote growing channels, and penalize those who have stagnated.
I don't think the normal strategy of improving content, thumbnail, etc, works, because unfortunately you channel may be flagged as non-growth (I'm assuming such a flag exists int he algorithm).
Since there is nothing much to lose, why not start a new channel?
Alternatively, you need to muster up some subs, and quickly. Your sub count needs to explode, to the point the algorithms goes "whoa baby! what's going on with this channel?" How to do that? The only way may be sub4sub at this stage. S4s has specific pitfalls you should be aware of if you do engage in it, but that's the only way I see to add 50-100 subs/day and force some exponential growth. But it's only a short term strategy, after that you need to switch back into normal sub mode.