Your profile is decent. I would get rid of 3 because it's with a girl and 5, since you don't look good in it. Also, in your bio, get rid of the part which says "But it won't last"
That's going to turn a lotta girls off. If you have some other photo options, post them below. But also, for higher quality, try bumble, hinge and fb dating

If you only want 18-24 year olds then you just have to alter your tinder preferences to that.

The "but it wont last" in your bio is good screening but probably does harm ya a bit.

The most attractive girls I get are still from IRL game, I'd keep that option open if you can

Your pics are not bad but they are all over the place from Party Vibe #3 to Outdoorsy #2 and #7 to family friendly #5. Also why are there two different dogs?

Ditch #4, #5, #6 it will be more what a young DTF type will look for as far as the party/adventurous vibe.

As for the Bio its a bit bland. Maybe change it to strengths and weaknesses. For strengths you can reword your line to "Been around the Block 15+ Countries and counting" and for Dominant you can say that you are 50 Shades Certified. Add other things that are playful like that. For weaknesses list the things you are looking for in a girl like Alex talks about "great ass and accents" or whatever it is for you so they qualify for you.

Hope this helps.

last two pics to the front. 18-24yr will love those pics. one of the ways i've also gotten young 18-22yrs was by changing my age 32 at the time down to 24. lol. after 3 months ill tell them the truth and it would just be funny. some i forget to tell them and it would just end naturally for whatever issue. instant results would usually be outside being seen in a porsche cayenne or bmw x5. they give you automatic chosing signal, mean while i am an ugly 5 lol. the 10s still throw themselves at me when those saw me in my rentals.