Saving CMYK image while preserving colors

So obviously I have learned, way after creating and working on a ton of files, that sRGB is the way to go. Is there any simple way to salvage these older files besides just saving as a PDF? I'm happy with the prints I got out of PS but sharing them, I'm worried the quality will be worse as PDF or the file size will be larger.

I actually started my first file in RGB but had Working CMYK proofing on for some reason (my first attempt using PS) so that made me research a bit after realizing all my colors were off. Just simply assumed sRGB was the monitor/web profile and CMYK was more accurate for printing since my inkjet has those cartridges. Thankfully doing this as a hobby, haha

Thanks for all the help and answers so far, really appreciate it

CMYK is for offset presses. Inkjet printers expect RGB.

Very few, if any, image viewers or web applications have any CMYK support at all! When fed CMYK data, they simply don't know what to do with it.

Use sRGB IEC61966-2.1 everywhere until you get more experience. That's safe and reproduces correctly in almost any situation.

Your best bet is to always work and save in RGB, then to save off a separate file as your CMYK if you really need one. Some file types do not work as CMYK and others do not interpret that color scheme correctly. So RGB or sRGB are the main thing to work in. and CMYK only for printing.

And as to you printing on an inkjet you have, is it a large format professional inkjet, or just a normal one used for an office or something that can print some photos? If it's the small office type, don't send it a CMYK image, you won't like what it does. Those printers expect to receive an RGB image and have software built in to interpret the RGB into its own way of doing CMYK. If you send it a CMYK file, its going to interpret it as if it is an RGB image anyway and totally mess with your colors. Effectively give your a double CMYK process to the image, muting out a lot of your colors and making it look rather "off".

You should stay in RBG for your image mode in photoshop, from photoshop you save a .tiff for print files, and do file save for web for your web graphics.