From my 10+ years in Sports betting, I can only say this is a bad advice- the best way to make profit is to have a good bankroll management and bet, preferably, ONLY SINGLE BETS(for example I use similar bankroll management to Cash Games and bet around 5% on my bets* I know I'm a bit too 'aggressive' but I don't have that many bets/ month and I'm usually quite picky with my picks...); you can search different forums for tips from other experienced gamblers of how to maximize your chances to make profit at Sports betting, but I'm confident that the majority will give you similar advice: avoid combos(at least tough to win* with like 5+ picks...), analyze the events you plan to bet on(if possible teams you can watch live too) and bet on Single bets...
Like last round of UCL, I've decided to skip the quarter-finals too as this games are IMO so close and tough to predict, but at least we had entertaining encounters
I'll give my opinion on today's games(I might place 1-2 live bets later on)- I expect goals at PSG vs. Barca- most likely
BTS(Yes) and Over 2.5 Goals, while backing Atletico at home is IMO a good choice- especially in UCL where Simeone's team always does really well... Good luck all with your bets!