I've been working on my S&V a lot. It's getting better but I still (1) meander toward the net after my serve instead of sprinting forward, and (2) don't sufficiently crash the net after my first volley to cut off my opponent's angle. So, my positioning still needs work.
Anyhow, an arseload of very short points (in Zapruder-approved video format):
https://screencast-o-matic.com/watch/cFVe1gonB1
(I couldn't find any meaningful rec-level S&V video on the site... odd)
couple other thoughts about your comments...
1) regarding meandering vs. sprinting forward...
a) when i first started s&v'ing i found it difficult to volley while on the move forward, maybe because i was so used to stop-hit-recover type movements... alot of stuff is going on when volleying on the move... head might be boucing everywhere. you still might be finding your ideal contact (matched with your ideal backswing, etc... so i definitely meandered in more in the beginning, than i do now... most folks practice their volleys standing still already at the net ("block volley practice")... then don't realize that it's a completely different feel/sensitivity when volleying while moving forward (typically need to soften your hands more to compensate for the forward motion - good news is that you can take a smaller backswing). keep at it, you get better with time.
b) there's nothing wrong with taking the volley well before the service line... sampras routinely volleyed in NML (vs. at the service line)... granted he was serving 120mph to someone returning with interest... point is that there's no need to rush. and there's no need to be at a certain position (ie. service line)... just move as fast as you can with control, and improve from there

you're better off volleying from further back, as long as you're in control of your body.
2) crashing net after first volley...
you're probably thinking you need to crash, because your opponent was hitting mostly hard passing shots... but if you just crash the net, you're very susceptible to getting lobbed. you definitely need to position (and continue to reposition) yourself such that you can backup for a lob, and/or move forward for a volley (which is probably not gonna be on top of the net, but maybe 2/3 of the way from the net to the service line).... of course, once you decide they are not hitting a lob, you should be closing forward (reading the opponents racquet gets better over time: ie. recognizing small tells in their setup)... then reposition to 2/3 (presume they will get it back)
other:
good job split stepping on the way in... took me a long time to figure that one out...
some nice pickups from your shoelaces at the service line
on shots you're not sure of, try guessing based on their prep... you did on some shots, but others you just froze (you'll get better at guessing right over time by recognizing tells in their setup)
overall some really great volleys...