tennis is just like any other sport in the sense of the more you watch, the more you learn, the more you are able to predict players
i do have some strategies in smaller tournaments. Top seeds always have a 1st round bye, so once they get to R2 it's their first match vs a player already played in R1 or a player than made it through qualifying then won R1
so I typically will take that player + games on the spread. The R2 opponent is always a better player, but 1st match of the week is always the hardest vs a player that has already won 1-4 matches just to get to R2, so that player is used to the surface and already played real matches compared to practice
of course doesn't always work, but good spots to pick and choose for sure
Moneylines are always high on top names/players, so you will notice I parlay a bunch. Takes 2-3-4-5 and the odds are much better than laying -500 or -900 or whatever they are
Take iga for example yesterday, -500 against pegula and she lost 6-2 6-2. no value at all laying that consistently
best i can say is follow my tennis thread, i'll have daily picks and then always ask me questions.