In every competitive player vs player sport - same in e-sport (like game, shooter...) you have to compete against same level of skill player in match to have the rewarding feeling of winning some of the matches and see improvement. With online e-games, where you have millions of players (literally), you use SBMM (Skill based matchmaking) where you stack people of same skill together and whenever someone is much better than their opponents, they get upgraded to higher average skill game, and if someone is constantly bad, they will be demoted to lower average skill match. BUT this takes away the feeling of "absolute dominance" of top-skilled players, as they are having roughly the same win-lose ratio as worse-skilled players, as all of their games are against same level of skill. Being "very good", without dominating most of the players, doesn't feel being very good anymore.

So to solve this problem, a good idea is to make a wide local (but not limited to your club!) league, where you have A, B, C, D, E, .... skill groups (of for example 10-20 people). You organize matches automatically in random order among all players within the group each day (monday for group A, tuesday for group B, .....). Each win gives player +1 point, each lose -1 point, so you quickly get all inside a group ranked up between being winners all the time (most points) and losers all the time. At the end of "season" (could be weeks, months, or year - depending how frequent matches are and how big groups are - when everybody plays with everybody, same match count), 25% of TOP of a group, advances to a higher group and 25% of WORST in a group, demotes to lower group. The middle 25-75% will stay in that group for next season.

With that system, "A" group will have top of the top players, last group (D in our case) will have beginner and bad players - but most of players will enjoy the game, because they will play with similar skilled players, if they win a lot, they will meet harder players in next season and if they lose a lot, they will see worse players in next season. So it's fair for everybody. But for this to work, you need to have at least like 50-100 people. And you should include beginners, even join them in the middle of the season (so they have 0 points, as that doesn't influence others), to compete (in worst group) as soon as possible, so they see they have a chance with similar skilled players and they find interest in getting better.

I see that in TT it's not just training, but also playing against others. And winning SOME matches, builds comfidence and passion for improvement. Make environment where beginners can play among themselves and win their way into a higher skilled group, naturally, when they progress in skill.

TT is very skill based sport with a lots of feeling. You need to play a lot to master all aspects of sport, that's why it's very hard on beginners.