Should I keep going to this acting class?

I am age 19 and I really want to be an actor, I’m currently trying to build a cv and I know how important having some training is to acting agents. I’ve went to 4 classes so far and it’s been really odd. We do cringe voice warm ups. We’ve been doing scenes where we make a scene only talking in tongue twisters, and not getting much feedback on our acting and how we can improve. I left 2 days ago because I felt it wasn’t helping and really pathetic at times lol but I realised i may have to go back for the sake of my cv. (There isn’t any other acting classes near me) Should I go back?