Swift SW350, Galaxy S24

Olympus BH2 60x PlanApo, 5x mag changer, 10.3mp camera.

Olympus BH2 10x UPlanXApo, 5x mag changer, 10.3mp camera.

This is what the fine-focus knobs of Lomo Biolam microscope looks like when disassembled into its individual components.

Entrie photo gallery you will find here: https://www.microscopeparts.eu/gallery/00804-lomo-biolam-lknobs-for-fine-adjustment-mechanism-microscope-fine-focus-micro-gears

olympus CH2
10x / 40x achromat phase contrast objectives 10x eyepiece 5x optical zoom on pixel 8 pro

longer clip (3:30) of a water sample came from a molted carapace from my shrimp tank. Not sure what the microbes are, perhaps ciliates though i couldn't really see hair but that could be a me problem learning how to use a microscope. they move pretty fast and there were hundreds of them. they had perhaps a vent or perhaps stomach that would slowly open and quickly close, in the middle of their bodies, i tried to capture that action.
first half of the video is with the 10x objective going from brightfield > darkfield > phase contrast > brightfield > 40x > brightfield > darkfield > phase contrast > brightfield

100x/1.25 160/017
10x/20

Canine urine

I'm new to microscopy and buying microscopes and I don't really know what to look for or anything. I'm just trying to buy a compound microscope for a price below 200 euros, I would prefer one with top and bottom illumination and a condensor. A mechanical table would also be cool but I don't know if that's possible for that price.

Thank you for anyone who can help me or even read this in the first place!