Your advantage is to organise you as sitem of betting, first of all when you plan do make a bet .
Think what kind of odds you want after that you analyze a event/match, compare to what booky offer.

You must understand tou can lose any bet or a serie of bet.
In this case the solution is Bank management – somme you plan to use for bet.
(you can lose) The budget at must be no pressure for lost and win, after that you need to fiind vale bets.
Value bets is a bet then the chanse to win is beter that the odds offered by bookmaker.
1 ex 50% chance to win a value bets is over 1/1 or 2,0 in decimal odds.

Focus at one sport, maybe on type of bet,
You cant now everything and be expert in every sport analize a strategy that you feel well for betting

Strategy Flat
I based on % for all Bank,
big flat is 5%, 1000 pounds, your bet mus be 50 , big odds (big chanse to lose) 1-2% 10-20 pounds,
In this case you can compare your results the efficiency or variation of strategy, % from all Bank , that you have.
For start is a good one, you cant loose all your money.

Strategy Miller
Also you can use strategy Miller this staregy is use in limit then you double your money, you double your bet, this strategy is common for casino player.
You start 1000 £ and after 1 month you has 2000 £ at 5% flat you bet 100 £

Strategy Kelly
Strategy Kelly cosist when you put the percentage that the event will be
(odds*expectation -1)/(odds - 1) * Bank

Expectation of bookmaker you can calulate = 100/deciaml odds 100/1,2 =82 %
or some you bet /some you must return. 1/4 is 25%

The diversication of risque by betting of more events in long period is you chance to be winner.