Shoe Texture/Details

hello!

i was modeling a shoe as an exercise and i got stuck on the texturing process (eevee).

someone already suggested me to leave the poly count as low as possible (with 218 vertices i think i'm good) and to add details (creases, holes, sole pattern, brand logo, ...) later with textures.

now, how should i move on next? how do i actually add those details with textures? do i have to manually paint the texture on the mesh? how do i unwrap the shoe correctly so the seams don't look off like this?

i never really worked deep with textures and if someone can point me to the right direction to follow for this type of work, it would be very much appreciated, thanks