www.gsmarena.com
Your Alcatel phone's dated status is itself a significant drawback (i.e. while most apps are continuing to receive updates the OS is no longer supported). But a major problem is even in its day, years ago, that phone was a sub-class, bargain-bin category phone -- low res display, only marginally usable amount of RAM, minimal internal storage memory, low-end CPU and GPU, etc., etc. And it's running a GO version of Android, a scaled down and functionally restricted version of Android intended for phones will limited capability.
So it's not surprising you are frustrated with this phone's storage. I'd recommend that instead of wasting so much time and effort getting this phone to a more usable condition that you instead buy a new replacement phone. Get a phone that just works, not one that aggravates you just to do basic tasks. Not knowing if you have an 8 or 16GB model is a minor issue, but consider the common basic amount of internal storage in even a viable budget-class phone, such as a Samsung Galaxy A15, is currently 128GB.
The Android phone space not only offers a variety of models made by different manufacturers, but also smartphones at all different price points. Here are the best budget Android phones you can buy today.
www.engadget.com
It's not like you wasted money on the microSD card, shop around for a better replacement phone, and insert the card into that. A microSD card's storage media is a good place for secondary, local backups of your phone's internal storage data.
This is just personal opinion but I very much disagree with current opinions that microSD cards aren't reliable. While that was more or less an accurate statement well over a decade ago, and can still be said for off-brand knock-offs that have currently flooded the market, if you bought a brand-name card you'll be fine. With today's technology, the physical storage media inside a microSD card is now much more stable and reliable that it was decades ago.
Over the years it's not like SD card development has been stagnant. All storage media in general has been under constant development the entire time. So SD cards are now more robust, faster, more capable. (.... There's still a software-related drawback with their default file system, but that's a user interaction issue.)
Basically, if you bought a cheap, off-brand card than you're risking data-loss so I'd suggest you toss the card. If you bought a brand-name, like Samsung, Crucial, SanDisk, etc. you should have a lot more confidence as added storage capacity for your phone.