Bet only on the 4 best clubs

[Dunamisx]

Every Gambler has their own target when it comes to the preference they made towards the match they select and the league they consider most, however, neither of these supports our ability to win or not, if we are to mention the most considerable teams in sports betting, we have them in their numbers and some of the recognized ones were not listed aside the four already mentioned by OP, just the same way everyone has their own fans and whom they support when it comes to playing sportsbet.

[Cityhunter34]

Is betting on just 2-4 teams profitable, especially if they frequently win every match? Let's take teams from La Liga and the Premier League?

Barcelona
Real Madrid
Arsenal
Manchester City

These four are giants in their respective leagues.

I plan to bet on every match, but I prefer single bets to parlays.
Has anyone tried this strategy before?
If so, what were the results?

First of all, there's no giants in the game of football so don't be carried away by teams performances because it is a game that luck plays a significant role in determining the final outcome. Although without any doubt this teams you mentioned are actually good but just that unpredictable of football are always in the game but I think I would prefer single bets just that it wouldn't give you a better odds because bookies are aware of their strengths and performances, so I think parlays will bring better odds than single.

[Cryptmuster]

First of all, there's no giants in the game of football so don't be carried away by teams performances because it is a game that luck plays a significant role in determining the final outcome. Although without any doubt this teams you mentioned are actually good but just that unpredictable of football are always in the game but I think I would prefer single bets just that it wouldn't give you a better odds because bookies are aware of their strengths and performances, so I think parlays will bring better odds than single.

You also need to consider the teams’ priorities, if it’s just another league match, the team will be fully focused on winning it. But if they have a very important Champions League game coming up, that could determine their future in the tournament, then the coach might rotate the squad, and the team’s chances of winning could decrease significantly. That’s why betting on the favorite every time just because they are considered the favorite is the wrong approach. You always need to take many different factors into account.

[iv4n]

I plan to bet on every match, but I prefer single bets to parlays.
Has anyone tried this strategy before?
If so, what were the results?

I think many of us tried that and failed... As some members already pointed out, since you are chasing small odds, the profit you will make will be small, and just a few bad bets will wipe out that profit and part of your bankroll. Combo bets on these 4 teams are risky as hell... most of the time it will fail because of one team.

But you can always try it, maybe you have something many others don't... Maybe you plan to follow & study these teams more carefully. I guess it would be foolish to bet on every game they play, maybe you simply need to pass some games. Bankroll management is important, but you also need to be brave to stake a bit more than usual when you feel it's time for that... Or maybe you already have a plan, and you just wait to put it in motion... In any case, good luck!

[stompix]

Has anyone tried this strategy before?
If so, what were the results?

It has been done before
I discussed it in my topic:
https://bitcointalk.org/index.php?topic=5507810.0
This was for two years ago:

Also, lols at morons who say no it will not work....because they woke up with the face in their pillow and the pillow was smelly!

[Perfectbaby]

I have also tried single bet and parlay, but to be honest, only thing that matters all is just being lucky and when the luck is not their you would found it that hard to win games.
I had a friend who loves parlay bet, where he usually select 2-4 games and often time do have winning, although not as regular as we may think of.

[Obim34]

I plan to bet on every match, but I prefer single bets to parlays.
Has anyone tried this strategy before?
If so, what were the results?

You're not just betting on any of the four teams to win their respective matches, but across several options, the strategy might work but not always, maybe the majority of times. This is part of a skill move, sports betting requires some level of skill, and i think there is a room for opportunity to make profits using this strategy.