you should move all of your teleport destinations a bit further away from the edge because it's currently very easy to telehop and accidentally fail twice which isn't fun. and it's hard to tell but if they're more than 1u off the floor you can also lower them down to that height. shift+w (1u grid snap) helps do that a bit quicker
it can be fixed by server plugins but for offline players it's nice to include tick regen via a prefab like this one:
https://jump.tf/forum/index.php?topic=3205.0 also try to be aware of texture consistency. right before the first tele door the dirt texture is pogo, but after the door one dirt wall is roller and the other dirt wall is tele+nonade. in general nonade is usually unnecessary and can be replaced with rollers
this is roller which is pretty annoying to deal with when you want to skip the front wall. it looks like you've got a skybox brush here, you can replace that with a tools/playerclip instead:
https://imgur.com/a/fVRc0s2