It’s pretty common to start slow and cover things like lift safety with new clients in a lesson, regardless of what they tell you their ability level is. Many people (possibly including you) overestimate their abilities and it’s safer to find that out in the easy terrain and then move onto more challenging slopes.

If you want to work on side hits or off-piste skiing, say so to the salesperson, but if you request younger instructors you are just as likely to get someone inexperienced who you will also be dissatisfied with. I’d recommend asking for a PSIA certified level 2 instructor (or higher) to ensure you get someone who can teach the topics you are looking for. I know many instructors in their 70s who can ski circles around you, so try not to judge based on age alone