I'm an ok French speaker, technically my second language although I "learned" Spanish in high school. At some point in a conversation people will realize I am not a native speaker but I can get by. I used a variety of things, including Duolingo for a while and Babbel for a bit, both of which I started on. Based on my experience, neither will get you very far for speaking. You'd be better off getting a real teacher or taking a class.

I like Babbel a lot for reading/writing/listening but their speaking is a little weak. It's there but I find it pretty flaky - either so permissive it'll accept just about any sound you make, or so buggy it won't accept a single thing.

I haven't done a lot with it, but Pimsleur (https://www.pimsleur.com/) seems quite good for conversational. I've done a couple trials of it and plan to dive in when I finish my Babbel courses.

For conversational though you might be better off just finding an online tutor. 1 hour a week with a native speaker is probably more effective than any of the apps.