It doesn't matter. Flexibility is only one of the conditions for practicing yoga. Yoga is a combination of balance, flexibility and strength, and both are indispensable. Especially practice with breathing. The average person is not flexible, so the strength will be relatively stronger. I am weak in flexibility, but my strength is ok. When I was studying in Yuman Yiren, many students who were more flexible than me didn't learn strength asana as fast as I did, so don't worry. Finding the right method and finding the right teacher is not a big problem. I have to talk about the place where I study: Yuman Yiren is really a very good school, unlike other schools, where thirty or forty people attend classes together and teachers can't see it. It is all about controlling the number of students and teaching in small classes to ensure that every student can master it. You can search online.