My manager doesn't know anything about the code, my project, or the release project.

IOW, your team has no leadership and no management. Your team lead may be called that, but sounds like he doesn't lead at all. Your manager may be called that, but he doesn't manage either. This happens a lot when people are given responsibility without any authority (probably the case for you "team lead"), or authority over things they don't understand (probably the case for your "manager").

The bad news is that you're part of a disorganized mob. The good news is that there is a leadership vacuum that, if you play your cards right, you could fill. If you want. Of course, even if you succeed, it's possible no one will care about your accomplishments. And you will probably make enemies. It's possible you'll be rewarded but given your description, I view that as unlikely.

As a side note, suggesting to the team lead that he lead and do X, Y or Z may appear to him as if you want him to take on risks with little upside. He's probably thought about doing those things anyway but just decided it's not worth the trouble. It's not all that surprising that he doesn't want to rock the boat.