If you want to play, make sure you do your homework and get to know your combinations and what is more likely to draw then not. If you can get 1 digit that is going to play and determine what position it will be in (1st, 2nd, 3rd) you can reduce your 1:1000 Odds down to 1:100 without even eliminating Doubles and Pures.
There are 120 "sets" of 3 different digit numbers and they draw 72% of the time. Each of those "sets" can be written 6 different ways. Watch your Repeat digits out of previous draws and anticipate when there will be no repeat. Keep in mind that most digits will re-draw before they get 5 or more draws out from the last time they drew.
Watch your Sum Totals. 2 Even/1Odd will Sum Total Odd
2 Odd/1 Even will Sm Total Even
All Odd will Sum Odd/ All Even will Sum Even
Doubles appear about 20-25% of the time
In Texas we have had 15 Doubles since the 1st of the year in the Day Draw. This is about 4 times a month. You have to look at the state you play in to determine how the numbers are falling.
There are Alpha Patterns 000/EEE. EOE.OEO, EEO/OOE, EOO/OEE
3 Denominations: Singles, Teens, 20's. Most of the time Sums 11-19 are drawm
You will improve your chances of hitting once you do your homework and become aware of what is going on. To do this effectively you have to put a little effort in to get something out. This means you are going to have to keep some kind of a record of what has happened in order to determine what to play. It may still be a "guess" but it is an EDUCATED guess.
I am with another on what I spend. I may have several numbers but I play 50 cents Any Orders on most of them and pick 1 specific set I either play Straight or Boxed. This keeps your cost down and if you have done your homework you should be able to hit often enough to make it worthwhile. As you become more confident you can increase what you spend and if you feel really, really good about a combination spend more for a sizable hit and put you in a position to continue on. If you don't take a chance once in a while you won't win anything.