Problem with custom font

[1Allexx1]

As i the title i don't know if I'm doing it right so this is how I done it.
Wanted to change font so tried Dynamic_loading_font_example.py from https://github.com/lvgl/lv_binding_micropython/blob/master/examples/Dynamic_loading_font_example.py
but loaded font where empty, like code was getting the .bin (with --format bin or --format lvgl) font but couldn't read the file.

the only next think was to add fonts to build so I did
make .c files moved it to lvgl_micropython\lib\lvgl\src\font
changed lv_conf in lvgl_micropython\lib

#define LV_FONT_CUSTOM_DECLARE LV_FONT_DECLARE(CHANGO_16) LV_FONT_DECLARE(CHANGO_22)

but there were problem with it
16.c:14:23: error: expected identifier or '(' before numeric constant 14 | #define CHANGO_16 1 |
so I asked chatgpt removed
#ifndef CHANGO_16
#define CHANGO_16 1
#endif

#if LCHANGO_16
from .c filles
but now still it CANT build it what have i done wrong

[1Allexx1]

never mind found out:
i made font .c file with same command as default fonts
example lv_font_montserrat_8 was made with : lv_font_conv --no-compress --no-prefilter --bpp 4 --size 8 --font Montserrat-Medium.ttf -r 0x20-0x7F,0xB0,0x2022 --font FontAwesome5-Solid+Brands+Regular.woff -r 61441,61448,61451,61452,61452,61453,61457,61459,61461,61465,61468,61473,61478,61479,61480,61502,61507,61512,61515,61516,61517,61521,61522,61523,61524,61543,61544,61550,61552,61553,61556,61559,61560,61561,61563,61587,61589,61636,61637,61639,61641,61664,61671,61674,61683,61724,61732,61787,61931,62016,62017,62018,62019,62020,62087,62099,62212,62189,62810,63426,63650 --format lvgl -o lv_font_montserrat_8.c --force-fast-kern-format
my font : lv_font_conv --no-compress --no-prefilter --bpp 4 --size 16 --font Chango-Regular.ttf --symbols "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" --format lvgl -o lv_font_chango_16.c --force-fast-kern-format

my thinking is that --no-compress --no-prefilter --format lvgl --force-fast-kern-format is must have