Can you contact the author or publisher? There are a number of foundries out there and it can be difficult to find a font to match despite the unusual low descender of the f. There are any number of “handwritten” fonts out there to choose from. If you want a native font, try noteworthy
According to whatfontis.com, the font is Sigher Regular otf (400), which is available on Creative Market starting at $12 (depending on your usage needs).