I think you should start getting looseleaf tea once you're done with the bags, or just give up on the bags entirely.

Try whole leaf tea instead of cutting tea bags open.

You can buy an immersive metal strainer for not too expensive and some loose leaf tea, on top of having less microplastics, it's significantly higher quality (tea in bags is dust left over after the processing of loose leaf tea).

Also, and this is genuine confusion so sorry, what do you mean by it's sexist to use the term normally? Is the name of a strainer or cheesecloth or something sexist? Genuine confusion, sorry, I don't understand that part of the text.

The problem with the people saying get off of bagged teas, I agree, but we have tons of those bag teas & what do we do with them, if we did?

Donate them,
What organization accepts them?

I had the same Problem bit with loose tea containing very small peaces. Got a thingy with lasered holes, these are much smaller so no more stuff in my tea Edit: it looks like a tiny cup, you put it in you cup and it stays in place with little wings

Try a French press maybe? You can also rinse off the tea dust before steeping which may help

You can get drawstring tea bags that are made to be filled with your own looseleaf tea. I used to buy some of the single use paper ones before I found a steel tea ball that I liked, but I've also seen reusable ones made out of muslin. Either way it's pretty easy to find plastic-free versions.

French press works a treat for tea ;)