New to the game, have some comments about it

You are getting farmed, basically they get 1000 bp and the killer will down you and hook you again, someone will come for you just for the same thing to happen again, and sadly no, there are no actions to tell other players unless you in chat with them, you can do the "follow me" gesture and hope they understand what you meant, you can do the point forward gesture to tell them to go or something, if you get healed and you want to thank you a survivor "crouch" twice, I'm no expert but that is what people tell me and I do it

It's because people are stupid in low ranks, and don't know how to go about properly and safely rescuing their fellow teammates. I wouldn't harp on them too much though, they don't know too much better, but they'll get the hang of it eventually.

In the meantime all you need to do is work on your own personal performance to keep yourself doing better no matter the situation you're put in. Improvise even if you're dealt a bad hand, and if you really know what you're doing you will eventually pip enough times that you'll reach higher ranks. Your reward for that is better teammates who won't pull that kind of crap as frequently, but also increasingly more competitive games where some people will get really sweaty especially when you hit the highest color: the infamous red ranks.

As for what to do IN the moment? I would encourage you to run what I call self-preservation perks, the best of which is Kindred, the god-tier perk for any solo player. It gives you information when someone else is hooked, and it gives other people information when you're hooked, hopefully they use that information effectively and are more easily able to avoid / stealth around a killer. This also works well with your style of play being the "radar" of the team. You could also run Decisive Strike but this is a highly controversial perk in the community, and tensions are always high when people bring it up when talking about balance. Don't let anyone ever tell you what you can't do, anything in the game (that's not cheating or griefing) is permissable gameplay wise, but I wouldn't get too reliant on a perk that may be getting nerfed in the near future.

Outside of Kindred and Decisive Strike, other Self-Preservation perks that could help you out are

1. Adrenaline (heals you and boost of speed when last gen pops so good if you're on your heels running with little hope while injured. Saving grace / last chance perk that has helped me out in many a bad situation)
2. Any exhaustion perk, most status effects reset after being hooked so you can use this to your advantage for a speedy getaway. Sprint Burst, Balanced Landing if you're hooked on a hill, Lithe if you've got a jungle gym or window of a central building next to you, Dead Hard to avoid a hit, etc.
3. Camaraderie - really underrated perk in my opinion, especially in low ranks where your teammates are probably all d*cking about, it can literally save your life. Even though I don't run it often I have a soft spot for this perk, as it has kept me alive for long after I should have been dead
4. Breakdown - off meta pick, not actually all that viable but if you're finding you're constantly being hit straight off the hook you might have a use for it. Breaks the hook you were hooked on immediately when you are unhooked so the killer can't just hook you on it again, he'd have to take you somewhere else. Used in conjunction with perks that let you wiggle faster or help you out while wiggling on the killers shoulder like Flip Flop, Boil Over, (the aforementioned Decisive Strike, but not entirely encouraged) could get you somewhere

That and just hold out, and keep on trying my guy. Hopefully you get better teammates, but at the end of the day glad you're enjoying the game.

That used to be what flailing your arms meant when the game first started, but then people started using it to communicate the opposite, so now no one can universally agree on what it's actually supposed to mean (which rather defeats the purpose).