I spent lots of time in front of therapists as well. What I got for it was an education in how I got to be who I am today. My recommendation is to save your money, watch School of Life videos (https://www.theschooloflife.com/) and you can figure out why you are you. The short answer is; your upbringing, because it's very hard to change that internal original programming.
The goal of therapy is 'know yourself'. So when you do eventually do 'know yourself' therapy is not going to be much help; you have achieved the goal of therapy.
(Side note: If you have had recent or unresolved trauma then 'yourself' has changed, go back to therapy to locate the new you.)
Although I do not like the term AT ALL, it sounds like you know who you are; you are a person with 'low self esteem'. I too, had "Low self esteem" as the therapists put it. What they didn't say is "Ok here's what you do with that".
Here is what I heard: "Go volunteer. Give back. Help others.".
Bullshit. That is misguided advice. You end up acting charitable and feeling used.
Or I hear "Go out, meet people."
Also, bad advice. I'm struggling and you are asking me to put social interactions on top of that too? No.
A Zen Buddhist monk once told me something that I think is applicable to you. "You can not directly control your emotions, they are too powerful, all you can control is your behavior. Control your behavior long enough your emotions will change."
That goes directly inline with the advice I'm about to give you, which is simply this:
Be competent.
Focus your energy on directing your behavior on being absolutely competent in one single area of your life and get mastery over it; absolute competence.
Once you feel like you have changed and have gained sufficient competency, move to the next thing. Build yourself up brick by brick by your actions and behavior.
It is much, much harder than just sitting talking to a therapist, but an order of magnitude more effective.