Well anyway, it remains an alternative that the OP could consider.
Honestly, no.
"Thinking it's good enough," is a pretty big warning sign in people looking at self-publishing, because a: often, they aren't. They may be good, but they need more work, which it's not going to get if the author thinks, 'good enough.' b: self-publishing, successfully, is an immense amount of work. Everything that working with a publisher already has in place for a writer is now the sole responsibility of the author. It doesn't make that big ocean any smaller and the author is now navigating it pretty much solo. The self-publishing market is glutted with writers who felt their work was 'good enough,' and thought all they had to do was get it on sale to get it sold, and it's just not ready.
And even the many really good self-published books out there, it doesn't matter how good your book is if very few people read or know about it. It combines an already herculean task with catching lightning in a bottle.
Self-publishing IS an alternative, but never one that should be brought up blithely, because it is so easy to do, and subsequently so very easy to do poorly.
Part of the Op's issue seems to be that they've gone from being a small fish in a small pond (the local writing sphere which can be directly engaged) to a tiny fish in a huge ocean. Even when agents express interest in your work, I can't imagine that yours is the ONLY manuscript taking up their attention, and in fact, they probably have a sizeable backlog. My reaction to finding out how many works one not particularly large agent could go through in a year was, 'how are there so many people writing so much out there?! It's unpossible!' That's one of the most sobering and almost discouraging part of the submission process - knowing that there are so many people out there who are also good, if not better, submitting at the same time.
So even if someone said they absolutely loved something, they have to see it... it still might be in queue behind quite a few other equally good or better manuscripts. A big part of getting published is that the process takes time. There's no way to get instant gratification (which is why being offered it is a big red flag) so you just have to be patient.
and you shouldn't too, lest they steal your idea.)
That's a ridiculous and unrealistic fear. 'Ideas' are worthless. I can post an idea right here, have 12 people read it, and get 12 totally different and unique executions of it. If your 'idea' is so good that they simply have to have it... well there you are, with your finished manuscript and the work already done, looking to get signed.