in my most of classes vs in most of my classes

Some examples from the web:

• I wouldn't miss but a day of classes.
• In Barcelona, the majority of classes are taught in Catalan.
• Dad wouldn't want me to miss my first day of classes.
• I'm taking same amount of classes in fewer hours.
• Kind of classes the place up a bit.
• So I bought a month's worth of classes.
• Don't. A full load of classes every year.
• It's the last day of classes.
• You need to make arrangements to be out of classes December 1st.
• Anyway, they got all kind of classes here.
• Poems prepared by pupils of classes 4A and B.
• A full load of classes every year.
• I was going to cut the rest of classes.
• We had a couple of classes together.
• I mean, he has taken so many different types of classes.
• It's a series of classes intended...
• It's a series of classes intended...
• Nobody studies the first week of classes.
• Packing Instructions applicable to dangerous goods of Classes 1 to 9 are listed in 4.1.4.
• are not substances of classes 5.1 or 5.2

Some examples from the web:

• Most of my classes are independent studies.
• My classes at Allen County Community College start next week...
• And I will never let my classes interfere with our work here.
• The university had cut two of my classes this year.
• No, everything's fine with my classes.
• I'm an actress, and the hours didn't conflictwith my classes.
• I'm falling behind in all of my classes.
• I'm failing my classes at school.
• All my classes like History and Culture Studies.
• I ditched all my classes and hung out with Ric.
• So, he's missed six of my classes.
• I take all my classes remotely.
• Or at least normal enough so I could pass my classes.
• Or at least normal enough so I could pass my classes.
• I thought you had to see if I finished my classes.
• My classes ended early today, so I thought we could talk.
• Not unlike the students that flowed through my classes years ago.
• I'm picking out my classes for next year.
• I'm almost finished with my classes.
• My parents pay for my classes.