For a standard rep gaining Targets it should be (100 rep +) and the reasons u don't have them is either you don't know how to get them and obviously you are still a noob/ newbie.

So am was among the people trying hard to get good targets but I never got one. Until I got more aggressive and got myself the best tricks that worked for me. But no worries because I have some tips that may help u, but that doesn't mean it's correct but I assure you that it's very helpful especially early game to get good targets.

• Tip 1: Get a donator pack (DP) this will have your Energy from 100 to 200 and the rate of regeneration will be more. For every 10 minutes you will have 5 e which is great, Further more you will attack more targets with refill which is a great deal. So back to the main point with donator status you will access the filtering feature where you can specify the type of target level range which will be more faster to get high level targets with low stats.
• Tip 2: This is a little easy (Those who can't afford Donator status or being a subscriber) of you wonder how this will work don't worry because I gotcha. If you are in a cartel with more members the better most importantly the one at your age Range. In the cartels there's a log where shows the (respect earned for the cartels members from attacking) EXAMPLE                      "MANFACTLID Attacked  HFSHBSBBSTYWHB and left them in the streets. (+ 25 )"                      By this attacking record one is able to tell what rep someone got. But if the person from your age range got (25 +) I think it's your lucky day because if u attack the target it likely you will get 100 rep + from the target. 
• Tip 3: This aslo works as STEP 2 but this will work in the hospital  (That's the biggest snitch) Just take a stroll in the hospital this you need more details to get a good target and

•  NoTe: HAVE THEM IN YOUR ENEMY LIST OR FRIEND LIST SO YOU WON'T LOSE THEM.                  The knowledge you need to have is the person who attacked them if they have Very High rep within your age Range yep that's the one to go for  Avoid those with less rep they have the same issues so try to get the targets from high rep players but make sure the age difference isn't so high.THIS IS BECAUSE THE STATS DIFFERENCE ISN'T THAT HIGH AND IF THERE TARGETS HAVE HIGHER STATS THAN YOURS YOU CAN WORK YOUR WAY AND CLAIM THEM AS FAST AS POSSIBLE. And with this you will be able to good targets there's no way that this three won't work for you that's how am able to get good targets also.
• Tip 4 : Ask for Your friends ( No one wants to share their good targets) if they have plenty then there's a reason to have luck and the other reason they will give you is when they don't get the same rep as before this means that they have increased in there stats which will have the rep gain low. But if you will be in the same position when they used to get the 100+ rep that will be useful.

GOOD NEWS IS THAT YOU WILL HAVE GOOD TARGETS BAD NEWS IS THAT YOUR TARGET MAY ALWAYS BE IN HOSPITAL 

SOLUTIONS: BE QUICK HAVE A GOOD STRATEGY AND WITH THAT ENJOY THE REP GAIN

IF U HAVE THE TARGETS ALREADY YOU DON'T WANT TO TRAIN YOUR STATS THIS WILL MAKE THE GAINS LOWERING AS YOU GET TOO STRONG. 

Glad to see you read my guide...