I'll be playing against another club this Sat. If you have some good tips please share and perhaps I can incorporate into my play-book.
Unless I know these players and enough of you, there is very little I could say that would channel you towards tactical advantages to exploit immediately.
However, watching your first match, I see a good deal of what you do and do not do well. Anything I say would be centered upon AVOIDING giving away points for free... which comes down to shot selection and your basic plan(s). Look at your vids and see where you lost points... HOW you lost them, what decision caused it, WHAT you did wrong on the shot execution and why, whether it was a high or low percentage play given your abilities, what you were expecting out of the point, etc. These are some of the big considerations that will form your tactics.
Of course, with a developing player (you) (me too in some aspects) it is damn impossible in a competitive match vs equal or even lesser players to perform things you do in practice 70% plus to make those even 50% in a real match. That is how it is. You end up pissing away more points being aggressive in that stage than you make... but for strategic development, it is important to stay aggressive within your abilities and go for shots you should go for... that is how you gain experience and improvement in consistency. so, there isn't a right or wrong answer in how conservative or aggressive one should play, it will depend on how much risk you want, how much you are willing to lose to gain experience to improve,, how committed you are...
Having said that, I would say to you to reduce unforced errors that originate out of poor decisions or decisions too late. See what is happening and decide what you want to do before the ball gets to the net (really earlier). If you choose not to attack, at least you can get to the ball near the bounce and have advantages in your underspin return (angles, easier control of incoming spin, easier spin generation, easier short or deep placement, and most of all, you rob time from opponent) (vs an equal or lesser opponent, this will over time give you more points from opponents errors as he or she now is trying to do higher risk things with less time and their consistency is not there under pressure.)
So I can say one thing that could help you right away... decide early if you will or will not attack, like right when opponent impacts ball or soon after... if you do not attack, step in to table if ball is not near endline, keep a LOOSE GRIP, and impact ball soon after the bounce... like within a few cm of the bounce. You will get more balls on the table, you will take away time from opponent, you stay in the point, you can see another chance early and take it. That adds up after a while, even for a player who does not have a dominating topspin from every ball.
Even at my level, a lot of matches are decided on opponents' poor decisions/executions, that includes underspin return decisions... and if those decisions are late, then underspin return quality is LOW and other player will win the point 90% of time.
I could extend the LOOSE GRIP advice at impact to offensive shots too... early on in a player's development, that adds to consistency (takes away power, but increases landing percentage)