Other managers didn't survive because they didn't show reasons to keep them. They didn't show any cause for optimism, they didn't show signs of future growth, they didn't show enough reasons to think with the right players their system could actually be successful.
We need to win 3 games from our last 4, finally have a break in the schedule to stumble over the line and get some fitness back. We won a cup. We showed plenty of good points in our systems, and ten hag has had to deal with championship/barely premier league caliber players as our central striker and our goalkeeper but we've done well despite it. We've stalled the past month, but I have full faith that we'll improve and especially make a massive leap by addressing just 2 positions. We have to address them, and it'll be a mistake not to do it, but also not the end of the world.
Can't get anything instantly, and most managers aren't capable of actually coaching us properly to compete. Ten hag ultimately is, so to be honest I don't see him under any sort of threat or risk. He's a better manager than anybody out there we could get, he's the best manager we've had post Sir Alex and he has it in him to develop us into a top top club again. Have full faith that the system he can coach can get us there. Sacking a manager is only worth it if you don't think his plans will actually work for your targets long term, and there is somebody better out there. So controversial it may be, but sacking a manager because of achieving certain targets or not is dumb IMO, as luck plays a big role in the final games, and you don't make massive future decisions on things like that.