[quote=@TheUnknowable]
(yes/no; It's highly unlikely that anyone with actual Force powers would be involved outside of established characters, but you might have the potential to learn if Obi-wan or Yoda survive long enough to teach you)[/quote]You do know that a whole lot of Jedi survived Order 66 right?

Canon:
Ahsoka Tano
Caleb Dume (guy in Rebels training Ezra forget his new name)
Jocasta Nu

Legends:
Djinn Altis
Aqinos
Caryn
Thracia Cho Leem
Minos Fel'Kona
Quinlan Vos
Kina Ha
A'Sharad Hett
Ikrit
Darrus Jeht
Dass Jennir
Jerec
K'Kruhk
Rahm Kota
Celeste Morne
Plett
Quarmall
Qu Rahn
T'ra Saa
Echuu Shen-Jon
Tholme
Vhiin Thorla
Vamilad
Zao
Arligan Zey
Tiberus Anderlock
Tel Angor
Fable Astin
Ool Awmod
Beldorion
Empatojayos Brand
Nej'a Berto'Lo
Kai Justiss
Knight Valin Draco
Elaiza
Neth Enasteri
Gel
Halbret
Ylenic It'kla
Jorad
Zalbar Jyvun
Kadann
Jhor-Kai
Kaoln
Jimbo Kinnison
Matarmeno Krahnn
Bardan Jusik
Shadow Maw
Meloria
Rav Naaran
Nos'lyn
Pann
Jax Pavan
Qid Proko
Tyneir Renz
Aven Rolk
Rorr'hn
Rune
Seek
Onli Shi'en
Corwin Shelvay
Rachi Sitra
Taselda
Damien Tantrellius
Dorn Tavers
Warl Thimbus
Travgen
Bre'ano Umakk
Trilinae Untaire
Urootar
Sarn Vals
Vergere
Vima-Da-Boda
Roni von Wasaki
Suljo Warde
Antaria Wellos: Went into hiding on Rori.
Unknown Knight
Dragite
Luxum
Ilum
Bon
Maris Brood
Drun Cairnwick
Shen-Ji Collun
Winslau Da'k
Dray
Gruu Dunrik
Ekria
Gerrick
Lagan Ismaren
Roganda Ismaren
Jedgar
Drakka Judarrl
Kendalina
Danaan Kerr
Ephaan Kenzon
Sinsor Khal
Lilith
Drake Lo'gaan
Nichos Marr
Raik Muun
Noirah Na
Lora Nadad
Deran Nalual
Nia
Nyo
Ferus Olin
Chase Piru
Jin-Lo Rayce
Joc Sah
Sardoth
Olee Starstone
Kajin Savaros
Ana Tathis
Antinnis Tremayne
Glovan Thule
Torva
Codi Ty
Misha Vekkian
Genel
Jiro
Nable
Onkya
Kennan Taanzer
Seddwia
Sidirri
Unidentified Togorian Initiate
Unidentified Human Initiate
Malleus
Gwellib Ap-Llewff
Halmere
Jambe Lu
Lanu Pasiq
Nam Poorf
Sarcev Quest
Valara Saar


That is quite a lot of people who could teach a Force Sensitive that is Obi or Yoda. Sure in Legends quite a few fell to the Dark Side and some of those joined the Empire, but that doesn't mean they had to in this RP.

I don't know how many Jedi there were before the Jedi Purge and after some undoubtedly died during the Clone Wars but IMO in Legends the Jedi Purge was very unsuccessful.