You have a pretty good SMV. But your pictures are mostly posed. Take a look at my IG for examples I use @siralexz.

For a personal Instagram I think it looks decent so far!

My opinion/recommendation:
-You need more photos now. And probably don’t just duplicate these onto dating apps.

-As someone who’s more observant I see clearly that’s your sister once you click her profile. However, someone quickly glancing will just assume girlfriend. And girls will see that if this is directly attached to your dating profile. Maybe in the description specificy #family or big/little sister.

Lastly, adjust the amount of emojis in your bio. Limit it to maybe two of the best/most fitting (Alex has two on Instagram and his looks much cleaner/simpler that way)

I'm confused. You seem to have a girlfriend.