so, i'm totally new to the seo world but i read a lot, so i want to start my own journey, but since the engligh keywords are extremely competitifs for most of the niches and my english is too poor compared to my french, i thought i'd start some hot niche websites (i checked the competition for a lot of hot niches and i can tell you there is a lot of potentiel) but here is my question, if i want to rank a french content website (probably on a c-o-m domain), do i need to build backlinks only on french niche related websites? or can i do it on english websites too? and how can that affect my ranking ? could that make google flag my website as if it has unatural spammy link building? or is it totally safe?