Try a tub shroom. Most stoppers need something to screw into, which you don't have. This system is stand alone and fits in most tub drain sizes. I bought one when I couldn't find a stopper to fit my drain, and it did a great job of catching hair or anything else that might block your pipes.
Tubshroom! The first as-seen-on-tv thing I've tried that works as well as it claims to!
Buy this, they also make one to fit a 2” shower drain if that’s what you have.
You should opt for a drain filter instead. Gross to clean, but it's more economical and you don't have to use caustic chemicals. https://www.amazon.com/TubShroom-Revolutionary-Protector-Strainer-Stainless/dp/B07PB6ZX9Y/ref=sr_1_11?crid=DCRI41S6NPE8&keywords=drain+filter+bathtub&qid=1666504173&qu=eyJxc2MiOiI1LjI5IiwicXNhIjoiNC45NyIsInFzcCI6IjQuNjIifQ%3D%3D&sp...
You may want to invest in a tubshroom. Makes it easier to periodically clean the drain instead of waiting for the massive clog down in the pipes.
For pics. Upload to imgur and add them to a reply or update the main description with the links.
I have a wife and 3 daughters with long hair. I own 2 of these and clean them out daily. Best investment ever.
I use a tubshroom. My wife’s hair is like kryptonite to drains and this thing has actually kept me from snaking it for over 3 years. Remove the cap that’s on there and try it out. Seriously it’s the best.
TubShroom Ultra Revolutionary Bath Tub Drain Protector Hair Catcher/Strainer/Snare Steel, Stainless Single Pack https://www.amazon.com/dp/B07PB6ZX9Y/ref=cm_sw_r_cp_api_glt_fabc_ZEC76EXVR3QE8X1T772W?_encoding=UTF8&psc=1
Get one of those zip tie drain cleaning thingamajigs and clean out the drain. Make sure you have a trash bin in the shower to immediately throw it away... And for when you start gaging from the stench. Then install a tub shroom or shower shroom so you never have to deal with something quite as disgusting again.
Same... I just got the new metal one after have the rubber one for a few years
https://www.amazon.com/TubShroom-Revolutionary-Protector-Strainer-Stainless/dp/B07PB6ZX9Y
Let me introduce you to something that saves my plumbing from getting clogged
the tube shroom
https://www.amazon.com/TubShroom-Revolutionary-Protector-Strainer-Stainless/dp/B07PB6ZX9Y
> Where do you get this shroom
I have three women in my house. You need a TubShroom!!!!
https://www.amazon.com/TubShroom-Revolutionary-Protector-Strainer-Stainless/dp/B07PB6ZX9Y
Tubshroom. TubShroom Ultra Revolutionary Bath Tub Drain Protector Hair Catcher/Strainer/Snare Stainless Steel, Stainless Single Pack https://www.amazon.com/dp/B07PB6ZX9Y/ref=cm_sw_r_cp_api_glt_fabc_0M9XQRTAYGMYWF2JHHB7
Why not get something like the tub shroom on Amazon? I have something similar to this and it works pretty good.
I use a silicone hair catcher over my drain but this guy is apparently the best https://www.amazon.com.au/TubShroom-Revolutionary-Protector-Strainer-Stainless/dp/B07PB6ZX9Y/ref=lp_4975719051_1_6
If you have the type of drain that goes down 3 or 4 inches, these things work really well: https://www.amazon.com/TubShroom-Revolutionary-Protector-Strainer-Stainless/dp/B07PB6ZX9Y/ref=sr_1_6?dchild=1&keywords=drain+mushroom&qid=1615490564&sr=8-6
For other types these work pretty well too: https://www.amazon.com/OXO-Silicone-Protector-Pop-Up-Regular/dp/B00OCEBMFM/ref=sr_1_5?dchild=1&keywords=drain+hair+catcher&qid=1615490898&sr=8-5
I have a tub drain mushroom looking thing, I’ll see if I can find the link on amazon. It has truly been a life saver. Edit: this