Airpods Pro Fit - I have tried all three tips and all three Ear Tip Fit Test comes back green on both sides.

Not sure how conclusive this test is but it would be good to get some more advice on how the fit should be for someone who has not used earbuds before. I have used the medium tips for a couple of weeks and the right falls out slightly when at the gym. I then changed both to the large and it seems that these are too big with me constantly trying to push them further in my ears as they do not feel snug like the medium. Is it that I am between sizes or am I doing something wrong? I have not tried the small for a pro-longed period yet but believe they will be far too small.

FYI - I could not select Airpods Pro on the Device/Topic for this thread as it is not listed as an option. Hopefully it is not just me that is suffering with this.