Use your phone as a microphone at the moment but really invest into saving for a microphone like a Blue Yetti. I get it that money can be tight, but in order to grow you'll have to spend money to make it.
For example, you're not only buying for a better quality mic. You are also saving your time in not having to go through hurtles like recording on your phone and transferring it over. You buy the better mic, you'll save yourself time so that way you can grow your channel faster in other tasks in that free time.
Its a huge investment that'll pay off so try your best saving for one.
