I've been playing roulette machines for quite some time now. And I have tried lots of techniques or so they say" 100% sure winning tricks" but it falls down to nothing... hehehehe...

My advice is to play the game as simple as it is. Be patient enough and don't your emotions take over you.. Like if you are losing 4 to 5 consecutive times, have a break, meaning take a walk, refresh your mind, calm down and start over...

With my experience, i treat my credit/bank roll as number of units, not the amount of money because as you do this, you could easily ruin your game if you think you have bet 80 $ chasing your loss, rather treating it by number of units. I always use the martingale system where I double my next bet after loss. Starting from 500 units, my bet is 5 units. I betting on red/black or, high/low, and even/odd as it gives me 47% chance to win. On the point on where should I bet, try to observe the results first. Maybe  10 spins. Then try to analyse if you can see some patterns coming, like jumping colors vice versa, or majority of the result were red or black, multiple nos. of certain color followed by single opposite color, etc... and this could happen to high and low, even or odd.. remember always be patient to do this.. Also, be advised that you should follow one course until your successful, meaning, if you bet on colors, stick to colors, don't bet on your next with high/low or even or odd as it will confuse you. Next, is to have a certain objective amount of winnings/losses. My experience to this is that I first have an objective to win 3 winnings or 15 units since I'm betting 5 units. If I can achieve it by choosing with colors, then why not continue.. I lose 3 consecutive, i have to check on other patterns with high/low or even odd... if it is still confusing me, then i pass.. observe again.. until I see some goods runs.. If i still continue to lose for 3 consecutive, i need to break... hehehe... Now, here's the thing, always limit your winnings/losses.. For example, with my 500 units, i stop at winning 30% of it which is 150.. it is possible to win this amount rather saying to stop at 1000 units, because always remember that aiming high profits will give more time to play, and the longer you play the bigger chance you'll lose.. As much as possible don't be greedy... casinos are open 24/7, you can always come back tomorrow..  It is always important to make feel that you have gain something and you have achieve your goal for the day. It boosts you and gives you self confidence. Do it again on the following day... I always keep my winnings from the previous days. So to tell you honestly, i made a month goal for my self, and that is win 4,500 units, simply 150 units a day x 30 days. and it was not easy.. I had an easy winning from my first 2 days, but with my third day, i lost 150 units and stop and went home. What i did before playing tomorrow is that I calculated the number of days remaining and the remaining amount from my target. I only have 27 days left and 4,350 units needed (4,500 target deducted by 150 from win on the first day). So in order to achieve that goal, i divided 4350 by 27  and came up 162 units per day to achieve my goal.. Fortunately, I made good from day 4 until day 15.. Day 16, i lost again with 150 units, since it is limit of loss everyday. And then recalculated my goal to have my new daily target.. To cut the story short, I did managed to achieve my goal but it wasn't easy.. I takes a lot patience and self control. hehehe... Here are some tips that might help:

Be Patient enough,
Don't make your emotions take over you,
Follow one course until you succeed,
Aim small, miss small,
Don't be greedy,
Dream big, but start small,

Nowadays, I'm playing with 1000 units and having a daily target of 300 units, placing it 9000 a month. My betting is now at 10 units instead of 5 units before... But still the same idea,plan, technique or system i used. It my third month now. I decided to increase it since i fortunately accomplished my goal for 8 months straight now... hehehehe.... humbly speaking...

And by the way, i usually play 2 to 3 hours a day.....