
When you say “by blood on my mother’s side” can I ask what that means exactly? Different denominations will consider you either Jewish or not Jewish based on details around this and that affects how you move forward to an extent. I would start by doing a little solo research into the many different ways that people exist as Jews and what “being Jewish” means to different people. If you find something that resonates with you dig into it further.
Also just to clarify by “move forward” I don’t mean to presume anything, just want you to be aware that depending on the answer that certain Jewish communities may not welcome you as readily as others will, and where you’re welcome will vary from community to community and also from situation to situation. Some communities may expect you to begin a formal conversion to include you in anything and elsewhere you may feel included almost everywhere.